IFC2x3 to IFC4

F.1.1 Entities

Item	SPF	XML	Change	Description
CORE DATA SCHEMAS
IFCKERNEL
IfcPropertySetDefinitionSet			ADDED
IfcComplexPropertyTemplateTypeEnum			ADDED
IfcPropertySetTemplateTypeEnum			ADDED
IfcSimplePropertyTemplateTypeEnum			ADDED
IfcDefinitionSelect			ADDED
IfcProcessSelect			ADDED
IfcProductSelect			ADDED
IfcPropertySetDefinitionSelect			ADDED
IfcResourceSelect			ADDED
IfcActor
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcComplexPropertyTemplate			ADDED
IfcContext			ADDED
IfcGroup
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcPreDefinedPropertySet			ADDED
IfcProject
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RepresentationContexts			MODIFIED	Instantiation changed to OPTIONAL.
UnitsInContext			MODIFIED	Instantiation changed to OPTIONAL.
IfcProjectLibrary			ADDED
IfcPropertySet
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcPropertySetTemplate			ADDED
IfcPropertyTemplate			ADDED
IfcPropertyTemplateDefinition			ADDED
IfcProxy
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcQuantitySet			ADDED
IfcRelAggregates
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelAssignsToActor
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelAssignsToControl
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelAssignsToGroup
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelAssignsToGroupByFactor			ADDED
IfcRelAssignsToProcess
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingProcess			MODIFIED	Type changed from IfcProcess to IfcProcessSelect.
IfcRelAssignsToProduct
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingProduct			MODIFIED	Type changed from IfcProduct to IfcProductSelect.
IfcRelAssignsToResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingResource			MODIFIED	Type changed from IfcResource to IfcResourceSelect.
IfcRelAssociates			MODIFIED	Instantiation changed to ABSTRACT.
IfcRelAssociatesClassification
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
RelatingClassification	X	X	MODIFIED	Type changed from IfcClassificationNotationSelect to IfcClassificationSelect.
IfcRelAssociatesDocument
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
IfcRelAssociatesLibrary
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
IfcRelDeclares			ADDED
IfcRelDefinesByObject			ADDED
IfcRelDefinesByProperties
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcObject to IfcObjectDefinition.
RelatingPropertyDefinition			MODIFIED	Type changed from IfcPropertySetDefinition to IfcPropertySetDefinitionSelect.
IfcRelDefinesByTemplate			ADDED
IfcRelDefinesByType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelNests
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects			MODIFIED	Aggregation changed from SET to LIST.
IfcSimplePropertyTemplate			ADDED
IfcTypeObject
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcTypeProcess			ADDED
IfcTypeProduct
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcTypeResource			ADDED
IfcRelOverridesProperties	X	X	DELETED
IfcRelSequence			MOVED	Schema changed from IFCKERNEL to IFCPROCESSEXTENSION.
IFCCONTROLEXTENSION
IfcPerformanceHistoryTypeEnum			ADDED
IfcPerformanceHistory
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification			MODIFIED	Name changed from LifeCyclePhase to Identification. Type changed from IfcLabel to IfcIdentifier. Instantiation changed to OPTIONAL.
LifeCyclePhase			ADDED
PredefinedType			ADDED
IfcRelAssociatesApproval
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
IfcRelAssociatesConstraint
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
Intent			MODIFIED	Instantiation changed to OPTIONAL.
IfcTimeSeriesSchedule	X	X	DELETED
IFCPROCESSEXTENSION
IfcEventTriggerTypeEnum			ADDED
IfcEventTypeEnum			ADDED
IfcSequenceEnum			MOVED	Schema changed from IFCKERNEL to IFCPROCESSEXTENSION.
IfcTaskTypeEnum			ADDED
IfcWorkCalendarTypeEnum			ADDED
IfcWorkPlanTypeEnum			ADDED
IfcWorkScheduleTypeEnum			ADDED
IfcEvent			ADDED
IfcEventType			ADDED
IfcProcedure
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ProcedureID to Identification. Instantiation changed to OPTIONAL.
LongDescription	X	X	MODIFIED	Name changed from ProcedureType to LongDescription. Type changed from IfcProcedureTypeEnum to IfcText. Instantiation changed to OPTIONAL.
PredefinedType	X	X	MODIFIED	Name changed from UserDefinedProcedureType to PredefinedType. Type changed from IfcLabel to IfcProcedureTypeEnum.
IfcProcedureType			ADDED
IfcRelSequence			MOVED	Schema changed from IFCKERNEL to IFCPROCESSEXTENSION.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
TimeLag	X	X	MODIFIED	Type changed from IfcTimeMeasure to IfcLagTime. Instantiation changed to OPTIONAL.
SequenceType			MODIFIED	Instantiation changed to OPTIONAL.
UserDefinedSequenceType			ADDED
IfcTask
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from TaskId to Identification. Instantiation changed to OPTIONAL.
LongDescription			MODIFIED	Name changed from Status to LongDescription. Type changed from IfcLabel to IfcText.
Status		X	MODIFIED	Name changed from WorkMethod to Status.
WorkMethod	X	X	MODIFIED	Name changed from IsMilestone to WorkMethod. Type changed from BOOLEAN to IfcLabel. Instantiation changed to OPTIONAL.
IsMilestone	X	X	MODIFIED	Name changed from Priority to IsMilestone. Type changed from INTEGER to BOOLEAN. Instantiation changed from OPTIONAL.
Priority			ADDED
TaskTime			ADDED
PredefinedType			ADDED
IfcTaskType			ADDED
IfcWorkCalendar			ADDED
IfcWorkPlan
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from Identifier to Identification. Instantiation changed to OPTIONAL.
CreationDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
Duration	X	X	MODIFIED	Type changed from IfcTimeMeasure to IfcDuration.
TotalFloat	X	X	MODIFIED	Type changed from IfcTimeMeasure to IfcDuration.
StartTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
FinishTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
PredefinedType			MODIFIED	Name changed from WorkControlType to PredefinedType. Type changed from IfcWorkControlTypeEnum to IfcWorkPlanTypeEnum.
UserDefinedControlType	X		DELETED
IfcWorkSchedule
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from Identifier to Identification. Instantiation changed to OPTIONAL.
CreationDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
Duration	X	X	MODIFIED	Type changed from IfcTimeMeasure to IfcDuration.
TotalFloat	X	X	MODIFIED	Type changed from IfcTimeMeasure to IfcDuration.
StartTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
FinishTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
PredefinedType			MODIFIED	Name changed from WorkControlType to PredefinedType. Type changed from IfcWorkControlTypeEnum to IfcWorkScheduleTypeEnum.
UserDefinedControlType	X		DELETED
IfcRelAssignsTasks	X	X	DELETED
IfcScheduleTimeControl	X	X	DELETED
IFCPRODUCTEXTENSION
IfcExternalSpatialElementTypeEnum			ADDED
IfcGeographicElementTypeEnum			ADDED
IfcGridTypeEnum			ADDED
IfcInternalOrExternalEnum
EXTERNAL_EARTH			ADDED
EXTERNAL_WATER			ADDED
EXTERNAL_FIRE			ADDED
IfcOpeningElementTypeEnum			ADDED
IfcProjectionElementTypeEnum			ADDED
IfcSpaceTypeEnum
SPACE			ADDED
PARKING			ADDED
GFA			ADDED
INTERNAL			ADDED
EXTERNAL			ADDED
IfcSpatialZoneTypeEnum			ADDED
IfcTransportElementTypeEnum
CRANEWAY			ADDED
LIFTINGGEAR			ADDED
IfcSpaceBoundarySelect			ADDED
IfcAnnotation
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcBuilding
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
CompositionType			MODIFIED	Instantiation changed to OPTIONAL.
IfcBuildingStorey
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
CompositionType			MODIFIED	Instantiation changed to OPTIONAL.
IfcCivilElement			ADDED
IfcCivilElementType			ADDED
IfcDistributionElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcDistributionElementType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElementAssembly
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
IfcElementAssemblyType			ADDED
IfcElementQuantity
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcExternalSpatialElement			ADDED
IfcExternalSpatialStructureElement			ADDED
IfcFurnishingElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFurnishingElementType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcGeographicElement			ADDED
IfcGeographicElementType			ADDED
IfcGrid
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcOpeningElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcOpeningStandardCase			ADDED
IfcProjectionElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcRelAssociatesMaterial
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedObjects	X	X	MODIFIED	Type changed from IfcRoot to IfcDefinitionSelect.
IfcRelConnectsElements
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelConnectsPorts
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelConnectsPortToElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedElement			MODIFIED	Type changed from IfcElement to IfcDistributionElement.
IfcRelConnectsWithRealizingElements
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelContainedInSpatialStructure
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingStructure	X	X	MODIFIED	Type changed from IfcSpatialStructureElement to IfcSpatialElement.
IfcRelFillsElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelInterferesElements			ADDED
IfcRelProjectsElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelReferencedInSpatialStructure
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingStructure	X	X	MODIFIED	Type changed from IfcSpatialStructureElement to IfcSpatialElement.
IfcRelServicesBuildings
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatedBuildings	X	X	MODIFIED	Type changed from IfcSpatialStructureElement to IfcSpatialElement.
IfcRelSpaceBoundary
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingSpace			MODIFIED	Type changed from IfcSpace to IfcSpaceBoundarySelect.
RelatedBuildingElement			MODIFIED	Instantiation changed from OPTIONAL.
IfcRelSpaceBoundary1stLevel			ADDED
IfcRelSpaceBoundary2ndLevel			ADDED
IfcRelVoidsElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcSite
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
CompositionType			MODIFIED	Instantiation changed to OPTIONAL.
IfcSpace
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
CompositionType			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Name changed from InteriorOrExteriorSpace to PredefinedType. Type changed from IfcInternalOrExternalEnum to IfcSpaceTypeEnum. Instantiation changed to OPTIONAL.
IfcSpaceType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
LongName			ADDED
IfcSpatialElement			ADDED
IfcSpatialElementType			ADDED
IfcSpatialZone			ADDED
IfcSpatialZoneType			ADDED
IfcSystem
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcTransportElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType		X	MODIFIED	Name changed from OperationType to PredefinedType.
CapacityByWeight	X		DELETED
CapacityByNumber	X		DELETED
IfcTransportElementType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcVirtualElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcZone
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
LongName			ADDED
IfcBuildingElementProxy			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcBuildingElementProxyType			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcCovering			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcCoveringType			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcElectricalElement	X	X	DELETED
IfcEquipmentElement	X	X	DELETED
IfcRelCoversBldgElements			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcRelCoversSpaces			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
SHARED ELEMENT DATA SCHEMAS
IFCSHAREDBLDGELEMENTS
IfcBeamTypeEnum
HOLLOWCORE			ADDED
SPANDREL			ADDED
IfcBuildingElementProxyTypeEnum			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcBuildingSystemTypeEnum			ADDED
IfcChimneyTypeEnum			ADDED
IfcColumnTypeEnum
PILASTER			ADDED
IfcCoveringTypeEnum			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
IfcDoorTypeEnum			ADDED
IfcDoorTypeOperationEnum			ADDED
IfcRoofTypeEnum
USERDEFINED			ADDED
IfcShadingDeviceTypeEnum			ADDED
IfcWallTypeEnum
MOVABLE			ADDED
PARAPET			ADDED
PARTITIONING			ADDED
SOLIDWALL			ADDED
IfcWindowTypeEnum			ADDED
IfcWindowTypePartitioningEnum			ADDED
IfcBeam
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcBeamStandardCase			ADDED
IfcBeamType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcBuildingElementProxy			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Name changed from CompositionType to PredefinedType. Type changed from IfcElementCompositionEnum to IfcBuildingElementProxyTypeEnum.
IfcBuildingElementProxyType			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcBuildingSystem			ADDED
IfcChimney			ADDED
IfcChimneyType			ADDED
IfcColumn
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcColumnStandardCase			ADDED
IfcColumnType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCovering			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcCoveringType			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCurtainWall
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcCurtainWallType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDoor
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
OperationType			ADDED
UserDefinedOperationType			ADDED
IfcDoorStandardCase			ADDED
IfcDoorType			ADDED
IfcMember
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcMemberStandardCase			ADDED
IfcMemberType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcPlate
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcPlateStandardCase			ADDED
IfcPlateType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcRailing
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRailingType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcRamp
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType		X	MODIFIED	Name changed from ShapeType to PredefinedType. Instantiation changed to OPTIONAL.
IfcRampFlight
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcRampFlightType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcRampType			ADDED
IfcRelConnectsPathElements
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingPriorities	X	X	MODIFIED	Type changed from INTEGER to NUMBER.
RelatedPriorities	X	X	MODIFIED	Type changed from INTEGER to NUMBER.
IfcRelCoversBldgElements			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelCoversSpaces			MOVED	Schema changed from IFCPRODUCTEXTENSION to IFCSHAREDBLDGELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
RelatingSpace		X	MODIFIED	Name changed from RelatedSpace to RelatingSpace.
IfcRoof
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType		X	MODIFIED	Name changed from ShapeType to PredefinedType. Instantiation changed to OPTIONAL.
IfcRoofType			ADDED
IfcShadingDevice			ADDED
IfcShadingDeviceType			ADDED
IfcSlab
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcSlabElementedCase			ADDED
IfcSlabStandardCase			ADDED
IfcSlabType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcStair
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType		X	MODIFIED	Name changed from ShapeType to PredefinedType. Instantiation changed to OPTIONAL.
IfcStairFlight
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcStairFlightType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcStairType			ADDED
IfcWall
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcWallElementedCase			ADDED
IfcWallStandardCase
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcWallType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcWindow
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
PartitioningType			ADDED
UserDefinedPartitioningType			ADDED
IfcWindowStandardCase			ADDED
IfcWindowType			ADDED
IfcDoorLiningProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorPanelProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorStyle			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowLiningProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowPanelProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowStyle			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IFCSHAREDBLDGSERVICEELEMENTS
IfcDistributionPortTypeEnum			ADDED
IfcDistributionSystemEnum			ADDED
IfcDistributionChamberElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcDistributionChamberElementType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDistributionCircuit			ADDED
IfcDistributionControlElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ControlElementId	X		DELETED
IfcDistributionFlowElement
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcDistributionPort
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
SystemType			ADDED
IfcDistributionSystem			ADDED
IfcEnergyConversionDevice
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowController
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowFitting
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowMovingDevice
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowSegment
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowStorageDevice
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowTerminal
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcFlowTreatmentDevice
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelFlowControlElements
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcElectricalBaseProperties	X	X	DELETED
IfcEnergyProperties	X	X	DELETED
IfcFluidFlowProperties	X	X	DELETED
IfcSoundProperties	X	X	DELETED
IfcSoundValue	X	X	DELETED
IfcSpaceThermalLoadProperties	X	X	DELETED
IFCSHAREDCOMPONENTELEMENTS
IfcBuildingElementPartTypeEnum			ADDED
IfcDiscreteAccessoryTypeEnum			ADDED
IfcFastenerTypeEnum			ADDED
IfcMechanicalFastenerTypeEnum			ADDED
IfcBuildingElementPart			MOVED	Schema changed from IFCSTRUCTURALELEMENTSDOMAIN to IFCSHAREDCOMPONENTELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcBuildingElementPartType			ADDED
IfcDiscreteAccessory
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcDiscreteAccessoryType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
PredefinedType			ADDED
IfcFastener
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcFastenerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
PredefinedType			ADDED
IfcMechanicalFastener
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcMechanicalFastenerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
PredefinedType			ADDED
NominalDiameter			ADDED
NominalLength			ADDED
IfcChamferEdgeFeature	X	X	DELETED
IfcEdgeFeature			DELETED
IfcRoundedEdgeFeature	X	X	DELETED
IFCSHAREDFACILITIESELEMENTS
IfcFurnitureTypeEnum			ADDED
IfcSystemFurnitureElementTypeEnum			ADDED
IfcAsset
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from AssetID to Identification. Instantiation changed to OPTIONAL.
OriginalValue			MODIFIED	Instantiation changed to OPTIONAL.
CurrentValue			MODIFIED	Instantiation changed to OPTIONAL.
TotalReplacementCost			MODIFIED	Instantiation changed to OPTIONAL.
Owner			MODIFIED	Instantiation changed to OPTIONAL.
User			MODIFIED	Instantiation changed to OPTIONAL.
ResponsiblePerson			MODIFIED	Instantiation changed to OPTIONAL.
IncorporationDate	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDate. Instantiation changed to OPTIONAL.
DepreciatedValue			MODIFIED	Instantiation changed to OPTIONAL.
IfcFurniture			ADDED
IfcFurnitureType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
PredefinedType			ADDED
IfcInventory
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType		X	MODIFIED	Name changed from InventoryType to PredefinedType. Instantiation changed to OPTIONAL.
Jurisdiction			MODIFIED	Instantiation changed to OPTIONAL.
ResponsiblePersons			MODIFIED	Instantiation changed to OPTIONAL.
LastUpdateDate	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDate. Instantiation changed to OPTIONAL.
IfcOccupant
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
IfcSystemFurnitureElement			ADDED
IfcSystemFurnitureElementType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
PredefinedType			ADDED
IfcRelOccupiesSpaces	X	X	DELETED
IfcServiceLife	X	X	DELETED
IfcServiceLifeFactor	X	X	DELETED
IFCSHAREDMGMTELEMENTS
IfcActionRequestTypeEnum			ADDED
IfcCostItemTypeEnum			ADDED
IfcPermitTypeEnum			ADDED
IfcActionRequest			MOVED	Schema changed from IFCFACILITIESMGMTDOMAIN to IFCSHAREDMGMTELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from RequestID to Identification. Instantiation changed to OPTIONAL.
PredefinedType			ADDED
Status			ADDED
LongDescription			ADDED
IfcCostItem
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification			ADDED
PredefinedType			ADDED
CostValues			ADDED
CostQuantities			ADDED
IfcCostSchedule
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification	X	X	MODIFIED	Name changed from SubmittedBy to Identification. Type changed from IfcActorSelect to IfcIdentifier.
PredefinedType	X	X	MODIFIED	Name changed from PreparedBy to PredefinedType. Type changed from IfcActorSelect to IfcCostScheduleTypeEnum.
Status	X	X	MODIFIED	Name changed from SubmittedOn to Status. Type changed from IfcDateTimeSelect to IfcLabel.
SubmittedOn			MODIFIED	Name changed from Status to SubmittedOn. Type changed from IfcLabel to IfcDateTime.
UpdateDate	X	X	MODIFIED	Name changed from TargetUsers to UpdateDate. Type changed from IfcActorSelect to IfcDateTime. Aggregation changed from SET to NONE.
UpdateDate	X		DELETED
ID	X		DELETED
PredefinedType	X		DELETED
IfcPermit			MOVED	Schema changed from IFCFACILITIESMGMTDOMAIN to IFCSHAREDMGMTELEMENTS.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from PermitID to Identification. Instantiation changed to OPTIONAL.
PredefinedType			ADDED
Status			ADDED
LongDescription			ADDED
IfcProjectOrder
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ID to Identification. Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
LongDescription			ADDED
IfcProjectOrderRecord	X	X	DELETED
IfcRelAssignsToProjectOrder	X	X	DELETED
IfcRelAssociatesAppliedValue	X	X	DELETED
IfcRelSchedulesCostItems	X	X	DELETED
DOMAIN SPECIFIC DATA SCHEMAS
IFCARCHITECTUREDOMAIN
IfcDoorPanelOperationEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorPanelPositionEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorStyleConstructionEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorStyleOperationEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowPanelOperationEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowPanelPositionEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowStyleConstructionEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcWindowStyleOperationEnum			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
IfcDoorLiningProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
LiningThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
ThresholdThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
TransomThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
LiningToPanelOffsetX			ADDED
LiningToPanelOffsetY			ADDED
IfcDoorPanelProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcDoorStyle			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcPermeableCoveringProperties
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcWindowLiningProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
LiningThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
TransomThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
MullionThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
LiningOffset			ADDED
LiningToPanelOffsetX			ADDED
LiningToPanelOffsetY			ADDED
IfcWindowPanelProperties			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcWindowStyle			MOVED	Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcRelInteractionRequirements	X	X	DELETED
IfcSpaceProgram	X	X	DELETED
IFCBUILDINGCONTROLSDOMAIN
IfcControllerTypeEnum
PROGRAMMABLE			ADDED
MULTIPOSITION			ADDED
PROPORTIONALINTEGRAL	X	X	DELETED
PROPORTIONALINTEGRALDERIVATIVE	X	X	DELETED
TIMEDTWOPOSITION	X	X	DELETED
IfcSensorTypeEnum
CONDUCTANCESENSOR			ADDED
CONTACTSENSOR			ADDED
IONCONCENTRATIONSENSOR			ADDED
LEVELSENSOR			ADDED
PHSENSOR			ADDED
RADIATIONSENSOR			ADDED
RADIOACTIVITYSENSOR			ADDED
WINDSENSOR			ADDED
CO2SENSOR	X	X	DELETED
IfcUnitaryControlElementTypeEnum			ADDED
IfcActuator			ADDED
IfcActuatorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcAlarm			ADDED
IfcAlarmType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcController			ADDED
IfcControllerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcFlowInstrument			ADDED
IfcFlowInstrumentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcSensor			ADDED
IfcSensorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcUnitaryControlElement			ADDED
IfcUnitaryControlElementType			ADDED
IFCCONSTRUCTIONMGMTDOMAIN
IfcConstructionEquipmentResourceTypeEnum			ADDED
IfcConstructionMaterialResourceTypeEnum			ADDED
IfcConstructionProductResourceTypeEnum			ADDED
IfcCrewResourceTypeEnum			ADDED
IfcLaborResourceTypeEnum			ADDED
IfcSubContractResourceTypeEnum			ADDED
IfcConstructionEquipmentResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity			ADDED
PredefinedType			ADDED
IfcConstructionEquipmentResourceType			ADDED
IfcConstructionMaterialResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity	X	X	MODIFIED	Name changed from Suppliers to BaseQuantity. Type changed from IfcActorSelect to IfcPhysicalQuantity. Aggregation changed from SET to NONE.
PredefinedType	X	X	MODIFIED	Name changed from UsageRatio to PredefinedType. Type changed from IfcRatioMeasure to IfcConstructionMaterialResourceTypeEnum.
IfcConstructionMaterialResourceType			ADDED
IfcConstructionProductResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity			ADDED
PredefinedType			ADDED
IfcConstructionProductResourceType			ADDED
IfcConstructionResourceType			ADDED
IfcCrewResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity			ADDED
PredefinedType			ADDED
IfcCrewResourceType			ADDED
IfcLaborResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity	X	X	MODIFIED	Name changed from SkillSet to BaseQuantity. Type changed from IfcText to IfcPhysicalQuantity.
PredefinedType			ADDED
IfcLaborResourceType			ADDED
IfcSubContractResource
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Identification		X	MODIFIED	Name changed from ResourceIdentifier to Identification.
LongDescription			MODIFIED	Name changed from ResourceGroup to LongDescription. Type changed from IfcLabel to IfcText.
Usage	X	X	MODIFIED	Name changed from ResourceConsumption to Usage. Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
BaseCosts	X	X	MODIFIED	Name changed from BaseQuantity to BaseCosts. Type changed from IfcMeasureWithUnit to IfcAppliedValue. Aggregation changed from NONE to LIST.
BaseQuantity	X	X	MODIFIED	Name changed from SubContractor to BaseQuantity. Type changed from IfcActorSelect to IfcPhysicalQuantity.
PredefinedType	X	X	MODIFIED	Name changed from JobDescription to PredefinedType. Type changed from IfcText to IfcSubContractResourceTypeEnum.
IfcSubContractResourceType			ADDED
IFCELECTRICALDOMAIN
IfcAudioVisualApplianceTypeEnum			ADDED
IfcCableFittingTypeEnum			ADDED
IfcCableSegmentTypeEnum
BUSBARSEGMENT			ADDED
CORESEGMENT			ADDED
IfcCommunicationsApplianceTypeEnum			ADDED
IfcElectricApplianceTypeEnum
FREESTANDINGELECTRICHEATER			ADDED
FREESTANDINGWATERHEATER			ADDED
FREESTANDINGWATERCOOLER			ADDED
KITCHENMACHINE			ADDED
COMPUTER	X	X	DELETED
DIRECTWATERHEATER	X	X	DELETED
ELECTRICHEATER	X	X	DELETED
FACSIMILE	X	X	DELETED
INDIRECTWATERHEATER	X	X	DELETED
PRINTER	X	X	DELETED
RADIANTHEATER	X	X	DELETED
SCANNER	X	X	DELETED
TELEPHONE	X	X	DELETED
TV	X	X	DELETED
WATERHEATER	X	X	DELETED
WATERCOOLER	X	X	DELETED
IfcElectricDistributionBoardTypeEnum			ADDED
IfcElectricGeneratorTypeEnum
CHP			ADDED
ENGINEGENERATOR			ADDED
STANDALONE			ADDED
IfcJunctionBoxTypeEnum
DATA			ADDED
POWER			ADDED
IfcLampTypeEnum
HALOGEN			ADDED
LED			ADDED
OLED			ADDED
IfcLightFixtureTypeEnum
SECURITYLIGHTING			ADDED
IfcOutletTypeEnum
DATAOUTLET			ADDED
TELEPHONEOUTLET			ADDED
IfcProtectiveDeviceTrippingUnitTypeEnum			ADDED
IfcProtectiveDeviceTypeEnum
EARTHLEAKAGECIRCUITBREAKER			ADDED
EARTHINGSWITCH			ADDED
EARTHFAILUREDEVICE	X	X	DELETED
IfcSolarDeviceTypeEnum			ADDED
IfcSwitchingDeviceTypeEnum
DIMMERSWITCH			ADDED
KEYPAD			ADDED
MOMENTARYSWITCH			ADDED
SELECTORSWITCH			ADDED
IfcTransformerTypeEnum
INVERTER			ADDED
RECTIFIER			ADDED
IfcAudioVisualAppliance			ADDED
IfcAudioVisualApplianceType			ADDED
IfcCableCarrierFitting			ADDED
IfcCableCarrierFittingType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCableCarrierSegment			ADDED
IfcCableCarrierSegmentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCableFitting			ADDED
IfcCableFittingType			ADDED
IfcCableSegment			ADDED
IfcCableSegmentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCommunicationsAppliance			ADDED
IfcCommunicationsApplianceType			ADDED
IfcElectricAppliance			ADDED
IfcElectricApplianceType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElectricDistributionBoard			ADDED
IfcElectricDistributionBoardType			ADDED
IfcElectricFlowStorageDevice			ADDED
IfcElectricFlowStorageDeviceType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElectricGenerator			ADDED
IfcElectricGeneratorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElectricMotor			ADDED
IfcElectricMotorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElectricTimeControl			ADDED
IfcElectricTimeControlType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcJunctionBox			ADDED
IfcJunctionBoxType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcLamp			ADDED
IfcLampType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcLightFixture			ADDED
IfcLightFixtureType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcMotorConnection			ADDED
IfcMotorConnectionType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcOutlet			ADDED
IfcOutletType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcProtectiveDevice			ADDED
IfcProtectiveDeviceTrippingUnit			ADDED
IfcProtectiveDeviceTrippingUnitType			ADDED
IfcProtectiveDeviceType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcSolarDevice			ADDED
IfcSolarDeviceType			ADDED
IfcSwitchingDevice			ADDED
IfcSwitchingDeviceType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcTransformer			ADDED
IfcTransformerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcElectricalCircuit	X	X	DELETED
IfcElectricDistributionPoint	X	X	DELETED
IfcElectricHeaterType	X	X	DELETED
IFCHVACDOMAIN
IfcAirTerminalTypeEnum
LOUVRE			ADDED
EYEBALL	X	X	DELETED
IRIS	X	X	DELETED
LINEARGRILLE	X	X	DELETED
LINEARDIFFUSER	X	X	DELETED
IfcBurnerTypeEnum			ADDED
IfcCoilTypeEnum
HYDRONICCOIL			ADDED
IfcCondenserTypeEnum
WATERCOOLED			ADDED
IfcEngineTypeEnum			ADDED
IfcEvaporatorTypeEnum
DIRECTEXPANSION			ADDED
IfcFilterTypeEnum
COMPRESSEDAIRFILTER			ADDED
IfcFlowMeterTypeEnum
ELECTRICMETER	X	X	DELETED
FLOWMETER	X	X	DELETED
IfcMedicalDeviceTypeEnum			ADDED
IfcPipeSegmentTypeEnum
CULVERT			ADDED
IfcPumpTypeEnum
SUBMERSIBLEPUMP			ADDED
SUMPPUMP			ADDED
IfcSpaceHeaterTypeEnum
RADIATOR			ADDED
SECTIONALRADIATOR	X	X	DELETED
PANELRADIATOR	X	X	DELETED
TUBULARRADIATOR	X	X	DELETED
BASEBOARDHEATER	X	X	DELETED
FINNEDTUBEUNIT	X	X	DELETED
UNITHEATER	X	X	DELETED
IfcTankTypeEnum
BASIN			ADDED
BREAKPRESSURE			ADDED
FEEDANDEXPANSION			ADDED
STORAGE			ADDED
VESSEL			ADDED
PREFORMED	X	X	DELETED
SECTIONAL	X	X	DELETED
IfcUnitaryEquipmentTypeEnum
DEHUMIDIFIER			ADDED
IfcAirTerminal			ADDED
IfcAirTerminalBox			ADDED
IfcAirTerminalBoxType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcAirTerminalType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcAirToAirHeatRecovery			ADDED
IfcAirToAirHeatRecoveryType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcBoiler			ADDED
IfcBoilerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcBurner			ADDED
IfcBurnerType			ADDED
IfcChiller			ADDED
IfcChillerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCoil			ADDED
IfcCoilType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCompressor			ADDED
IfcCompressorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCondenser			ADDED
IfcCondenserType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCooledBeam			ADDED
IfcCooledBeamType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcCoolingTower			ADDED
IfcCoolingTowerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDamper			ADDED
IfcDamperType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDuctFitting			ADDED
IfcDuctFittingType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDuctSegment			ADDED
IfcDuctSegmentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcDuctSilencer			ADDED
IfcDuctSilencerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcEngine			ADDED
IfcEngineType			ADDED
IfcEvaporativeCooler			ADDED
IfcEvaporativeCoolerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcEvaporator			ADDED
IfcEvaporatorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcFan			ADDED
IfcFanType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcFilter			ADDED
IfcFilterType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcFlowMeter			ADDED
IfcFlowMeterType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcHeatExchanger			ADDED
IfcHeatExchangerType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcHumidifier			ADDED
IfcHumidifierType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcMedicalDevice			ADDED
IfcMedicalDeviceType			ADDED
IfcPipeFitting			ADDED
IfcPipeFittingType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcPipeSegment			ADDED
IfcPipeSegmentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcPump			ADDED
IfcPumpType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcSpaceHeater			ADDED
IfcSpaceHeaterType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcTank			ADDED
IfcTankType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcTubeBundle			ADDED
IfcTubeBundleType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcUnitaryEquipment			ADDED
IfcUnitaryEquipmentType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcValve			ADDED
IfcValveType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcVibrationIsolator			ADDED
IfcVibrationIsolatorType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcGasTerminalType	X	X	DELETED
IFCPLUMBINGFIREPROTECTIONDOMAIN
IfcInterceptorTypeEnum			ADDED
IfcWasteTerminalTypeEnum
GREASEINTERCEPTOR	X	X	DELETED
OILINTERCEPTOR	X	X	DELETED
PETROLINTERCEPTOR	X	X	DELETED
IfcFireSuppressionTerminal			ADDED
IfcFireSuppressionTerminalType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcInterceptor			ADDED
IfcInterceptorType			ADDED
IfcSanitaryTerminal			ADDED
IfcSanitaryTerminalType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcStackTerminal			ADDED
IfcStackTerminalType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IfcWasteTerminal			ADDED
IfcWasteTerminalType
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ApplicableOccurrence			MODIFIED	Type changed from IfcLabel to IfcIdentifier.
IFCSTRUCTURALANALYSISDOMAIN
IfcLoadGroupTypeEnum
LOAD_COMBINATION_GROUP	X	X	DELETED
IfcStructuralCurveActivityTypeEnum			ADDED
IfcStructuralCurveMemberTypeEnum			ADDED
IfcStructuralSurfaceActivityTypeEnum			ADDED
IfcStructuralSurfaceMemberTypeEnum			ADDED
IfcRelConnectsStructuralActivity
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelConnectsStructuralMember
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcRelConnectsWithEccentricity
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcStructuralAnalysisModel
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
SharedPlacement			ADDED
IfcStructuralCurveAction			ADDED
IfcStructuralCurveConnection
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
Axis			ADDED
IfcStructuralCurveMember
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Type changed from IfcStructuralCurveTypeEnum to IfcStructuralCurveMemberTypeEnum.
Axis			ADDED
IfcStructuralCurveMemberVarying
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Type changed from IfcStructuralCurveTypeEnum to IfcStructuralCurveMemberTypeEnum.
Axis			ADDED
IfcStructuralCurveReaction			ADDED
IfcStructuralLinearAction
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
DestabilizingLoad			MODIFIED	Instantiation changed to OPTIONAL.
ProjectedOrTrue	X	X	MODIFIED	Name changed from CausedBy to ProjectedOrTrue. Type changed from IfcStructuralReaction to IfcProjectedOrTrueLengthEnum.
PredefinedType	X	X	MODIFIED	Name changed from ProjectedOrTrue to PredefinedType. Type changed from IfcProjectedOrTrueLengthEnum to IfcStructuralCurveActivityTypeEnum.
IfcStructuralLoadCase			ADDED
IfcStructuralLoadGroup
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcStructuralPlanarAction
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
DestabilizingLoad			MODIFIED	Instantiation changed to OPTIONAL.
ProjectedOrTrue	X	X	MODIFIED	Name changed from CausedBy to ProjectedOrTrue. Type changed from IfcStructuralReaction to IfcProjectedOrTrueLengthEnum.
PredefinedType	X	X	MODIFIED	Name changed from ProjectedOrTrue to PredefinedType. Type changed from IfcProjectedOrTrueLengthEnum to IfcStructuralSurfaceActivityTypeEnum.
IfcStructuralPointAction
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
DestabilizingLoad			MODIFIED	Instantiation changed to OPTIONAL.
CausedBy	X		DELETED
IfcStructuralPointConnection
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
ConditionCoordinateSystem			ADDED
IfcStructuralPointReaction
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcStructuralResultGroup
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcStructuralSurfaceAction			ADDED
IfcStructuralSurfaceConnection
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcStructuralSurfaceMember
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Type changed from IfcStructuralSurfaceTypeEnum to IfcStructuralSurfaceMemberTypeEnum.
IfcStructuralSurfaceMemberVarying
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Type changed from IfcStructuralSurfaceTypeEnum to IfcStructuralSurfaceMemberTypeEnum.
SubsequentThickness	X		DELETED
VaryingThicknessLocation	X		DELETED
IfcStructuralSurfaceReaction			ADDED
IfcRelAssociatesProfileProperties	X	X	DELETED
IfcRelConnectsStructuralElement	X	X	DELETED
IfcStructuralLinearActionVarying	X	X	DELETED
IfcStructuralPlanarActionVarying	X	X	DELETED
IFCSTRUCTURALELEMENTSDOMAIN
IfcFootingTypeEnum
CAISSON_FOUNDATION			ADDED
IfcPileTypeEnum
BORED			ADDED
DRIVEN			ADDED
JETGROUTING			ADDED
IfcReinforcingBarTypeEnum			ADDED
IfcReinforcingMeshTypeEnum			ADDED
IfcSurfaceFeatureTypeEnum			ADDED
IfcTendonAnchorTypeEnum			ADDED
IfcVoidingFeatureTypeEnum			ADDED
IfcBendingParameterSelect			ADDED
IfcFooting
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
IfcFootingType			ADDED
IfcPile
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
IfcPileType			ADDED
IfcReinforcementDefinitionProperties
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
IfcReinforcingBar
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
NominalDiameter			MODIFIED	Instantiation changed to OPTIONAL.
CrossSectionArea			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Name changed from BarRole to PredefinedType. Type changed from IfcReinforcingBarRoleEnum to IfcReinforcingBarTypeEnum. Instantiation changed to OPTIONAL.
IfcReinforcingBarType			ADDED
IfcReinforcingElementType			ADDED
IfcReinforcingMesh
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
LongitudinalBarNominalDiameter			MODIFIED	Instantiation changed to OPTIONAL.
TransverseBarNominalDiameter			MODIFIED	Instantiation changed to OPTIONAL.
LongitudinalBarCrossSectionArea			MODIFIED	Instantiation changed to OPTIONAL.
TransverseBarCrossSectionArea			MODIFIED	Instantiation changed to OPTIONAL.
LongitudinalBarSpacing			MODIFIED	Instantiation changed to OPTIONAL.
TransverseBarSpacing			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcReinforcingMeshType			ADDED
IfcSurfaceFeature			ADDED
IfcTendon
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			MODIFIED	Instantiation changed to OPTIONAL.
NominalDiameter			MODIFIED	Instantiation changed to OPTIONAL.
CrossSectionArea			MODIFIED	Instantiation changed to OPTIONAL.
IfcTendonAnchor
OwnerHistory			MODIFIED	Instantiation changed to OPTIONAL.
PredefinedType			ADDED
IfcTendonAnchorType			ADDED
IfcTendonType			ADDED
IfcVoidingFeature			ADDED
IfcBuildingElementComponent			DELETED
IfcBuildingElementPart			MOVED	Schema changed from IFCSTRUCTURALELEMENTSDOMAIN to IFCSHAREDCOMPONENTELEMENTS.
IFCFACILITIESMGMTDOMAIN			DELETED
IfcConditionCriterionSelect			DELETED
IfcActionRequest			MOVED	Schema changed from IFCFACILITIESMGMTDOMAIN to IfcSharedMgmtElements.
IfcCondition	X	X	DELETED
IfcConditionCriterion	X	X	DELETED
IfcEquipmentStandard	X	X	DELETED
IfcFurnitureStandard	X	X	DELETED
IfcMove	X	X	DELETED
IfcOrderAction	X	X	DELETED
IfcPermit			MOVED	Schema changed from IFCFACILITIESMGMTDOMAIN to IfcSharedMgmtElements.
RESOURCE DEFINITION DATA SCHEMAS
IFCACTORRESOURCE
IfcRoleEnum
COMMISSIONINGENGINEER			ADDED
COMISSIONINGENGINEER	X	X	DELETED
IfcOrganization
Identification		X	MODIFIED	Name changed from Id to Identification.
IfcOrganizationRelationship
Name			MODIFIED	Instantiation changed to OPTIONAL.
IfcPerson
Identification		X	MODIFIED	Name changed from Id to Identification.
IfcTelecomAddress
WWWHomePageURL			MODIFIED	Type changed from IfcLabel to IfcURIReference.
MessagingIDs			ADDED
IFCAPPROVALRESOURCE
IfcApproval
Identifier			MODIFIED	Name changed from Description to Identifier. Type changed from IfcText to IfcIdentifier.
Name	X	X	MODIFIED	Name changed from ApprovalDateTime to Name. Type changed from IfcDateTimeSelect to IfcLabel. Instantiation changed to OPTIONAL.
Description			MODIFIED	Name changed from ApprovalStatus to Description. Type changed from IfcLabel to IfcText.
TimeOfApproval			MODIFIED	Name changed from ApprovalLevel to TimeOfApproval. Type changed from IfcLabel to IfcDateTime.
Status			MODIFIED	Name changed from ApprovalQualifier to Status. Type changed from IfcText to IfcLabel.
Level		X	MODIFIED	Name changed from Name to Level. Instantiation changed to OPTIONAL.
Qualifier			MODIFIED	Name changed from Identifier to Qualifier. Type changed from IfcIdentifier to IfcText. Instantiation changed to OPTIONAL.
RequestingApproval			ADDED
GivingApproval			ADDED
IfcApprovalRelationship
Name	X	X	MODIFIED	Name changed from RelatedApproval to Name. Type changed from IfcApproval to IfcLabel. Instantiation changed to OPTIONAL.
Description	X	X	MODIFIED	Name changed from RelatingApproval to Description. Type changed from IfcApproval to IfcText. Instantiation changed to OPTIONAL.
RelatingApproval	X	X	MODIFIED	Name changed from Description to RelatingApproval. Type changed from IfcText to IfcApproval. Instantiation changed from OPTIONAL.
RelatedApprovals	X	X	MODIFIED	Name changed from Name to RelatedApprovals. Type changed from IfcLabel to IfcApproval. Aggregation changed from NONE to SET.
IfcResourceApprovalRelationship			ADDED
IfcApprovalActorRelationship	X	X	DELETED
IfcApprovalPropertyRelationship	X	X	DELETED
IFCCONSTRAINTRESOURCE
IfcBenchmarkEnum
INCLUDES			ADDED
NOTINCLUDES			ADDED
INCLUDEDIN			ADDED
NOTINCLUDEDIN			ADDED
IfcLogicalOperatorEnum
LOGICALXOR			ADDED
LOGICALNOTAND			ADDED
LOGICALNOTOR			ADDED
IfcObjectiveEnum
CODEWAIVER			ADDED
EXTERNAL			ADDED
MERGECONFLICT			ADDED
MODELVIEW			ADDED
PARAMETER			ADDED
IfcMetricValueSelect
IfcAppliedValue			ADDED
IfcValue			ADDED
IfcReference			ADDED
IfcDateTimeSelect	X	X	DELETED
IfcText			DELETED
IfcCostValue			DELETED
IfcMetric
CreationTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
ReferencePath			ADDED
IfcObjective
CreationTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
BenchmarkValues	X	X	MODIFIED	Type changed from IfcMetric to IfcConstraint. Aggregation changed from NONE to LIST.
LogicalAggregator	X	X	MODIFIED	Name changed from ResultValues to LogicalAggregator. Type changed from IfcMetric to IfcLogicalOperatorEnum.
IfcReference			ADDED
IfcResourceConstraintRelationship			ADDED
IfcConstraintAggregationRelationship	X	X	DELETED
IfcConstraintClassificationRelationship	X	X	DELETED
IfcConstraintRelationship	X	X	DELETED
IfcPropertyConstraintRelationship	X	X	DELETED
IFCCOSTRESOURCE
IfcAppliedValueSelect
IfcValue			ADDED
IfcReference			ADDED
IfcRatioMeasure			DELETED
IfcMonetaryMeasure			DELETED
IfcAppliedValue			MODIFIED	Instantiation changed from ABSTRACT.
ApplicableDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDate.
FixedUntilDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDate.
Category			ADDED
Condition			ADDED
ArithmeticOperator			ADDED
Components			ADDED
IfcCostValue
ApplicableDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDate.
FixedUntilDate	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDate.
Category		X	MODIFIED	Name changed from CostType to Category. Instantiation changed to OPTIONAL.
Condition			MODIFIED	Type changed from IfcText to IfcLabel.
ArithmeticOperator			ADDED
Components			ADDED
IfcCurrencyRelationship
Name	X	X	MODIFIED	Name changed from RelatingMonetaryUnit to Name. Type changed from IfcMonetaryUnit to IfcLabel. Instantiation changed to OPTIONAL.
Description	X	X	MODIFIED	Name changed from RelatedMonetaryUnit to Description. Type changed from IfcMonetaryUnit to IfcText. Instantiation changed to OPTIONAL.
RelatingMonetaryUnit	X	X	MODIFIED	Name changed from ExchangeRate to RelatingMonetaryUnit. Type changed from IfcPositiveRatioMeasure to IfcMonetaryUnit.
RelatedMonetaryUnit	X	X	MODIFIED	Name changed from RateDateTime to RelatedMonetaryUnit. Type changed from IfcDateAndTime to IfcMonetaryUnit.
ExchangeRate	X	X	MODIFIED	Name changed from RateSource to ExchangeRate. Type changed from IfcLibraryInformation to IfcPositiveRatioMeasure. Instantiation changed from OPTIONAL.
RateDateTime			ADDED
RateSource			ADDED
IfcAppliedValueRelationship	X	X	DELETED
IfcEnvironmentalImpactValue	X	X	DELETED
IfcReferencesValueDocument	X	X	DELETED
IFCDATETIMERESOURCE
IfcDate			ADDED
IfcDateTime			ADDED
IfcDayInWeekNumber			ADDED
IfcDuration			ADDED
IfcTime			ADDED
IfcTimeStamp			MOVED	Schema changed from IFCMEASURERESOURCE to IFCDATETIMERESOURCE.
IfcDataOriginEnum			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
IfcRecurrenceTypeEnum			ADDED
IfcTaskDurationEnum			ADDED
IfcTimeSeriesDataTypeEnum			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
IfcTimeOrRatioSelect			ADDED
IfcEventTime			ADDED
IfcIrregularTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
StartTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
EndTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
IfcIrregularTimeSeriesValue			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
TimeStamp	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
IfcLagTime			ADDED
IfcRecurrencePattern			ADDED
IfcRegularTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
StartTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
EndTime	X	X	MODIFIED	Type changed from IfcDateTimeSelect to IfcDateTime.
IfcResourceTime			ADDED
IfcSchedulingTime			ADDED
IfcTaskTime			ADDED
IfcTaskTimeRecurring			ADDED
IfcTimePeriod			ADDED
IfcTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
IfcTimeSeriesValue			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IFCDATETIMERESOURCE.
IfcWorkTime			ADDED
IfcCalendarDate	X	X	DELETED
IfcCoordinatedUniversalTimeOffset	X	X	DELETED
IfcDateAndTime	X	X	DELETED
IfcLocalTime	X	X	DELETED
IFCEXTERNALREFERENCERESOURCE
IfcLanguageId			ADDED
IfcURIReference			ADDED
IfcClassificationReferenceSelect			ADDED
IfcClassificationSelect			ADDED
IfcResourceObjectSelect			ADDED
IfcClassification
Source			MODIFIED	Instantiation changed to OPTIONAL.
Edition			MODIFIED	Instantiation changed to OPTIONAL.
EditionDate	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDate.
Description			ADDED
Location			ADDED
ReferenceTokens			ADDED
IfcClassificationReference
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
ReferencedSource			MODIFIED	Type changed from IfcClassification to IfcClassificationReferenceSelect.
Description			ADDED
Sort			ADDED
IfcDocumentInformation
Identification		X	MODIFIED	Name changed from DocumentId to Identification.
Location	X	X	MODIFIED	Name changed from DocumentReferences to Location. Type changed from IfcDocumentReference to IfcURIReference. Aggregation changed from SET to NONE.
CreationTime	X	X	MODIFIED	Type changed from IfcDateAndTime to IfcDateTime.
LastRevisionTime	X	X	MODIFIED	Type changed from IfcDateAndTime to IfcDateTime.
ElectronicFormat	X	X	MODIFIED	Type changed from IfcDocumentElectronicFormat to IfcIdentifier.
ValidFrom	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDate.
ValidUntil	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDate.
IfcDocumentInformationRelationship
Name	X	X	MODIFIED	Name changed from RelatingDocument to Name. Type changed from IfcDocumentInformation to IfcLabel. Instantiation changed to OPTIONAL.
Description	X	X	MODIFIED	Name changed from RelatedDocuments to Description. Type changed from IfcDocumentInformation to IfcText. Instantiation changed to OPTIONAL. Aggregation changed from SET to NONE.
RelatingDocument	X	X	MODIFIED	Name changed from RelationshipType to RelatingDocument. Type changed from IfcLabel to IfcDocumentInformation. Instantiation changed from OPTIONAL.
RelatedDocuments			ADDED
RelationshipType			ADDED
IfcDocumentReference
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
Description			ADDED
ReferencedDocument			ADDED
IfcExternalInformation			ADDED
IfcExternalReferenceRelationship			ADDED
IfcLibraryInformation
Publisher			MODIFIED	Type changed from IfcOrganization to IfcActorSelect.
VersionDate	X	X	MODIFIED	Type changed from IfcCalendarDate to IfcDateTime.
Location	X	X	MODIFIED	Name changed from LibraryReference to Location. Type changed from IfcLibraryReference to IfcURIReference. Aggregation changed from SET to NONE.
Description			ADDED
IfcLibraryReference
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
Description			ADDED
Language			ADDED
ReferencedLibrary			ADDED
IfcResourceLevelRelationship			ADDED
IfcClassificationItem	X	X	DELETED
IfcClassificationItemRelationship	X	X	DELETED
IfcClassificationNotation	X	X	DELETED
IfcClassificationNotationFacet	X	X	DELETED
IfcDocumentElectronicFormat	X	X	DELETED
IFCGEOMETRICCONSTRAINTRESOURCE
IfcGridPlacementDirectionSelect			ADDED
IfcSolidOrShell			ADDED
IfcConnectionVolumeGeometry			ADDED
IfcGridPlacement
PlacementRefDirection			MODIFIED	Type changed from IfcVirtualGridIntersection to IfcGridPlacementDirectionSelect.
IfcConnectionPortGeometry	X	X	DELETED
IFCGEOMETRICMODELRESOURCE
IfcAdvancedBrep			ADDED
IfcAdvancedBrepWithVoids			ADDED
IfcCartesianPointList			ADDED
IfcCartesianPointList3D			ADDED
IfcExtrudedAreaSolid
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcExtrudedAreaSolidTapered			ADDED
IfcFixedReferenceSweptAreaSolid			ADDED
IfcRevolvedAreaSolid
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcRevolvedAreaSolidTapered			ADDED
IfcSurfaceCurveSweptAreaSolid
Position			MODIFIED	Instantiation changed to OPTIONAL.
StartParam			MODIFIED	Instantiation changed to OPTIONAL.
EndParam			MODIFIED	Instantiation changed to OPTIONAL.
IfcSweptDiskSolid
StartParam			MODIFIED	Instantiation changed to OPTIONAL.
EndParam			MODIFIED	Instantiation changed to OPTIONAL.
IfcSweptDiskSolidPolygonal			ADDED
IfcTessellatedFaceSet			ADDED
IfcTessellatedItem			ADDED
IfcTriangulatedFaceSet			ADDED
IFCGEOMETRYRESOURCE
IfcBSplineSurfaceForm			ADDED
IfcKnotType			ADDED
IfcCurveOnSurface			ADDED
IfcBoundaryCurve			ADDED
IfcBoundedSurface			MODIFIED	Instantiation changed to ABSTRACT.
IfcBSplineCurveWithKnots			ADDED
IfcBSplineSurface			ADDED
IfcBSplineSurfaceWithKnots			ADDED
IfcCompositeCurveOnSurface			ADDED
IfcCurveBoundedSurface			ADDED
IfcCylindricalSurface			ADDED
IfcOuterBoundaryCurve			ADDED
IfcPcurve			ADDED
IfcRationalBSplineCurveWithKnots			ADDED
IfcRationalBSplineSurfaceWithKnots			ADDED
IfcReparametrisedCompositeCurveSegment			ADDED
IfcSurfaceOfLinearExtrusion
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcSurfaceOfRevolution
Position			MODIFIED	Instantiation changed to OPTIONAL.
Ifc2DCompositeCurve	X	X	DELETED
IfcBezierCurve	X	X	DELETED
IfcRationalBezierCurve	X	X	DELETED
IFCMATERIALRESOURCE
IfcCardinalPointReference			ADDED
IfcMaterialSelect
IfcMaterialUsageDefinition			ADDED
IfcMaterialDefinition			ADDED
IfcMaterial			DELETED
IfcMaterialLayerSetUsage			DELETED
IfcMaterialLayerSet			DELETED
IfcMaterialLayer			DELETED
IfcMaterial
Description			ADDED
Category			ADDED
IfcMaterialClassificationRelationship
MaterialClassifications	X	X	MODIFIED	Type changed from IfcClassificationNotationSelect to IfcClassificationSelect.
IfcMaterialConstituent			ADDED
IfcMaterialConstituentSet			ADDED
IfcMaterialDefinition			ADDED
IfcMaterialLayer
LayerThickness			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
Name			ADDED
Description			ADDED
Category			ADDED
Priority			ADDED
IfcMaterialLayerSet
Description			ADDED
IfcMaterialLayerSetUsage
ReferenceExtent			ADDED
IfcMaterialLayerWithOffsets			ADDED
IfcMaterialProfile			ADDED
IfcMaterialProfileSet			ADDED
IfcMaterialProfileSetUsage			ADDED
IfcMaterialProfileSetUsageTapering			ADDED
IfcMaterialProfileWithOffsets			ADDED
IfcMaterialProperties			MODIFIED	Schema changed from IFCMATERIALPROPERTYRESOURCE to IFCMATERIALRESOURCE. Instantiation changed from ABSTRACT.
Name	X	X	MODIFIED	Name changed from Material to Name. Type changed from IfcMaterial to IfcIdentifier. Instantiation changed to OPTIONAL.
Description			ADDED
Properties			ADDED
Material			ADDED
IfcMaterialRelationship			ADDED
IfcMaterialUsageDefinition			ADDED
IFCMEASURERESOURCE
IfcAreaDensityMeasure			ADDED
IfcNonNegativeLengthMeasure			ADDED
IfcSoundPowerLevelMeasure			ADDED
IfcSoundPressureLevelMeasure			ADDED
IfcTemperatureRateOfChangeMeasure			ADDED
IfcDerivedUnitEnum
AREADENSITYUNIT			ADDED
SOUNDPOWERLEVELUNIT			ADDED
SOUNDPRESSURELEVELUNIT			ADDED
TEMPERATURERATEOFCHANGEUNIT			ADDED
IfcDerivedMeasureValue
IfcTemperatureRateOfChangeMeasure			ADDED
IfcAreaDensityMeasure			ADDED
IfcSoundPowerLevelMeasure			ADDED
IfcSoundPressureLevelMeasure			ADDED
IfcTimeStamp	X	X	DELETED
IfcMeasureValue
IfcNonNegativeLengthMeasure			ADDED
IfcSimpleValue
IfcDateTime			ADDED
IfcDate			ADDED
IfcTime			ADDED
IfcDuration			ADDED
IfcTimeStamp			ADDED
IfcConversionBasedUnitWithOffset			ADDED
IfcMonetaryUnit
Currency	X	X	MODIFIED	Type changed from IfcCurrencyEnum to IfcLabel.
IFCPRESENTATIONAPPEARANCERESOURCE
IfcFontStyle			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcFontVariant			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcFontWeight			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcPresentableText			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextFontName			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcColour			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcHatchLineDistanceSelect
IfcVector			ADDED
IfcOneDirectionRepeatFactor	X	X	DELETED
IfcPresentationStyleSelect
IfcSymbolStyle	X	X	DELETED
IfcStyleAssignmentSelect			ADDED
IfcTextFontSelect			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcBlobTexture
Mode	X	X	MODIFIED	Name changed from TextureType to Mode. Type changed from IfcSurfaceTextureEnum to IfcIdentifier. Instantiation changed to OPTIONAL.
Parameter		X	MODIFIED	Name changed from RasterFormat to Parameter. Instantiation changed to OPTIONAL. Aggregation changed from NONE to LIST.
RasterFormat	X	X	MODIFIED	Name changed from RasterCode to RasterFormat. Type changed from BOOLEAN to IfcIdentifier.
RasterCode			ADDED
IfcColourRgb			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcColourRgbList			ADDED
IfcColourSpecification			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcCurveStyle
ModelOrDraughting			ADDED
IfcDraughtingPreDefinedColour			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcExternallyDefinedHatchStyle
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
IfcExternallyDefinedSurfaceStyle
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
IfcExternallyDefinedTextFont			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
Location			MODIFIED	Type changed from IfcLabel to IfcURIReference.
Identification		X	MODIFIED	Name changed from ItemReference to Identification.
IfcFillAreaStyle
ModelorDraughting			ADDED
IfcFillAreaStyleTiles
TilingPattern	X	X	MODIFIED	Type changed from IfcOneDirectionRepeatFactor to IfcVector. Aggregation changed from NONE to LIST.
Tiles	X	X	MODIFIED	Type changed from IfcFillAreaStyleTileShapeSelect to IfcStyledItem.
IfcImageTexture
Mode	X	X	MODIFIED	Name changed from TextureType to Mode. Type changed from IfcSurfaceTextureEnum to IfcIdentifier. Instantiation changed to OPTIONAL.
Parameter		X	MODIFIED	Name changed from UrlReference to Parameter. Instantiation changed to OPTIONAL. Aggregation changed from NONE to LIST.
URLReference			ADDED
IfcIndexedColourMap			ADDED
IfcIndexedTextureMap			ADDED
IfcIndexedTriangleTextureMap			ADDED
IfcPixelTexture
Mode	X	X	MODIFIED	Name changed from TextureType to Mode. Type changed from IfcSurfaceTextureEnum to IfcIdentifier. Instantiation changed to OPTIONAL.
Parameter	X	X	MODIFIED	Name changed from Width to Parameter. Type changed from IfcInteger to IfcIdentifier. Instantiation changed to OPTIONAL. Aggregation changed from NONE to LIST.
Width		X	MODIFIED	Name changed from Height to Width.
Height		X	MODIFIED	Name changed from ColourComponents to Height.
ColourComponents	X	X	MODIFIED	Name changed from Pixel to ColourComponents. Type changed from BINARY (32) to IfcInteger. Aggregation changed from LIST to NONE.
Pixel			ADDED
IfcPreDefinedColour			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcPreDefinedItem			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcPreDefinedTextFont			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcStyledItem
Styles			MODIFIED	Type changed from IfcPresentationStyleAssignment to IfcStyleAssignmentSelect.
IfcTextStyle
TextCharacterAppearance	X	X	MODIFIED	Type changed from IfcCharacterStyleSelect to IfcTextStyleForDefinedFont.
TextStyle	X	X	MODIFIED	Type changed from IfcTextStyleSelect to IfcTextStyleTextModel.
ModelOrDraughting			ADDED
IfcTextStyleFontModel			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
FontFamily			MODIFIED	Instantiation changed from OPTIONAL.
IfcTextureCoordinate			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextureCoordinateGenerator			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
Maps	X	X	MODIFIED	Name changed from Mode to Maps. Type changed from IfcLabel to IfcSurfaceTexture. Aggregation changed from NONE to LIST.
Mode	X	X	MODIFIED	Name changed from Parameter to Mode. Type changed from IfcSimpleValue to IfcLabel. Aggregation changed from LIST to NONE.
Parameter			ADDED
IfcTextureMap			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
Maps	X	X	MODIFIED	Name changed from TextureMaps to Maps. Type changed from IfcVertexBasedTextureMap to IfcSurfaceTexture. Aggregation changed from SET to LIST.
Vertices			ADDED
MappedTo			ADDED
IfcTextureVertex			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextureVertexList			ADDED
IfcFillAreaStyleTileSymbolWithStyle	X	X	DELETED
IfcOneDirectionRepeatFactor	X	X	DELETED
IfcSymbolStyle	X	X	DELETED
IfcTextStyleWithBoxCharacteristics	X	X	DELETED
IfcTwoDirectionRepeatFactor	X	X	DELETED
IFCPRESENTATIONDEFINITIONRESOURCE
IfcPlanarBox			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONDEFINITIONRESOURCE.
IfcPlanarExtent			MOVED	Schema changed from IFCPRESENTATIONRESOURCE to IFCPRESENTATIONDEFINITIONRESOURCE.
IfcPresentationItem			ADDED
IfcAnnotationCurveOccurrence	X	X	DELETED
IfcAnnotationFillAreaOccurrence	X	X	DELETED
IfcAnnotationOccurrence			DELETED
IfcAnnotationSurface	X	X	DELETED
IfcAnnotationSurfaceOccurrence	X	X	DELETED
IfcAnnotationSymbolOccurrence	X	X	DELETED
IfcAnnotationTextOccurrence	X	X	DELETED
IfcDefinedSymbol	X	X	DELETED
IfcExternallyDefinedSymbol	X	X	DELETED
IfcPreDefinedSymbol			DELETED
IfcTextureCoordinate			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextureCoordinateGenerator			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextureMap			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcTextureVertex			MOVED	Schema changed from IFCPRESENTATIONDEFINITIONRESOURCE to IFCPRESENTATIONAPPEARANCERESOURCE.
IfcVertexBasedTextureMap	X	X	DELETED
IFCPRESENTATIONORGANIZATIONRESOURCE
IfcPresentationLayerWithStyle
LayerStyles	X	X	MODIFIED	Type changed from IfcPresentationStyleSelect to IfcPresentationStyle.
IFCPROFILERESOURCE
IfcReinforcingBarRoleEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcReinforcingBarSurfaceEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcSectionTypeEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcAsymmetricIShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
BottomFlangeWidth		X	MODIFIED	Name changed from OverallWidth to BottomFlangeWidth.
BottomFlangeThickness		X	MODIFIED	Name changed from FlangeThickness to BottomFlangeThickness.
BottomFlangeFilletRadius			MODIFIED	Name changed from FilletRadius to BottomFlangeFilletRadius. Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
TopFlangeFilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
BottomFlangeEdgeRadius			MODIFIED	Name changed from CentreOfGravityInY to BottomFlangeEdgeRadius. Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
BottomFlangeSlope			ADDED
TopFlangeEdgeRadius			ADDED
TopFlangeSlope			ADDED
IfcCircleHollowProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcCircleProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcCShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
InternalFilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
CentreOfGravityInX	X		DELETED
IfcEllipseProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcIShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
FilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
FlangeEdgeRadius			ADDED
FlangeSlope			ADDED
IfcLShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
FilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
EdgeRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
CentreOfGravityInX	X		DELETED
CentreOfGravityInY	X		DELETED
IfcMirroredProfileDef			ADDED
IfcProfileDef			MODIFIED	Instantiation changed from ABSTRACT.
IfcProfileProperties			MODIFIED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE. Instantiation changed from ABSTRACT.
Name			MODIFIED	Name changed from ProfileName to Name. Type changed from IfcLabel to IfcIdentifier.
Description	X	X	MODIFIED	Name changed from ProfileDefinition to Description. Type changed from IfcProfileDef to IfcText.
Properties			ADDED
ProfileDefinition			ADDED
IfcRectangleHollowProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
InnerFilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
OuterFilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
IfcRectangleProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcReinforcementBarProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcRoundedRectangleProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcSectionProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcSectionReinforcementProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IFCPROFILERESOURCE.
IfcTrapeziumProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
IfcTShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
FilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
FlangeEdgeRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
WebEdgeRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
CentreOfGravityInY	X		DELETED
IfcUShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
FilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
EdgeRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
CentreOfGravityInX	X		DELETED
IfcZShapeProfileDef
Position			MODIFIED	Instantiation changed to OPTIONAL.
FilletRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
EdgeRadius			MODIFIED	Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
IfcCraneRailAShapeProfileDef	X	X	DELETED
IfcCraneRailFShapeProfileDef	X	X	DELETED
IFCPROPERTYRESOURCE
IfcCurveInterpolationEnum			ADDED
IfcObjectReferenceSelect
IfcMaterialDefinition			ADDED
IfcTable			ADDED
IfcMaterial			DELETED
IfcDateAndTime	X	X	DELETED
IfcMaterialList	X	X	DELETED
IfcCalendarDate	X	X	DELETED
IfcLocalTime	X	X	DELETED
IfcMaterialLayer			DELETED
IfcExtendedProperties			ADDED
IfcPreDefinedProperties			ADDED
IfcPropertyAbstraction			ADDED
IfcPropertyBoundedValue
SetPointValue			ADDED
IfcPropertyDependencyRelationship
Name	X	X	MODIFIED	Name changed from DependingProperty to Name. Type changed from IfcProperty to IfcLabel. Instantiation changed to OPTIONAL.
Description	X	X	MODIFIED	Name changed from DependantProperty to Description. Type changed from IfcProperty to IfcText. Instantiation changed to OPTIONAL.
DependingProperty	X	X	MODIFIED	Name changed from Name to DependingProperty. Type changed from IfcLabel to IfcProperty. Instantiation changed from OPTIONAL.
DependantProperty	X	X	MODIFIED	Name changed from Description to DependantProperty. Type changed from IfcText to IfcProperty. Instantiation changed from OPTIONAL.
IfcPropertyEnumeratedValue
EnumerationValues			MODIFIED	Instantiation changed to OPTIONAL.
IfcPropertyListValue
ListValues			MODIFIED	Instantiation changed to OPTIONAL.
IfcPropertyReferenceValue
UsageName			MODIFIED	Type changed from IfcLabel to IfcText.
PropertyReference			MODIFIED	Instantiation changed to OPTIONAL.
IfcPropertyTableValue
DefiningValues			MODIFIED	Instantiation changed to OPTIONAL.
DefinedValues			MODIFIED	Instantiation changed to OPTIONAL.
CurveInterpolation			ADDED
IFCQUANTITYRESOURCE
IfcQuantityArea
Formula			ADDED
IfcQuantityCount
Formula			ADDED
IfcQuantityLength
Formula			ADDED
IfcQuantityTime
Formula			ADDED
IfcQuantityVolume
Formula			ADDED
IfcQuantityWeight
Formula			ADDED
IFCREPRESENTATIONRESOURCE
IfcCoordinateReferenceSystemSelect			ADDED
IfcProductRepresentationSelect			ADDED
IfcCoordinateOperation			ADDED
IfcCoordinateReferenceSystem			ADDED
IfcMapConversion			ADDED
IfcProductRepresentation			MODIFIED	Instantiation changed to ABSTRACT.
IfcProjectedCRS			ADDED
IfcRepresentation			MODIFIED	Instantiation changed to ABSTRACT.
IfcRepresentationContext			MODIFIED	Instantiation changed to ABSTRACT.
IfcShapeAspect
PartOfProductDefinitionShape			MODIFIED	Type changed from IfcProductDefinitionShape to IfcProductRepresentationSelect. Instantiation changed to OPTIONAL.
IFCSTRUCTURALLOADRESOURCE
IfcModulusOfRotationalSubgradeReactionSelect			ADDED
IfcModulusOfSubgradeReactionSelect			ADDED
IfcModulusOfTranslationalSubgradeReactionSelect			ADDED
IfcRotationalStiffnessSelect			ADDED
IfcTranslationalStiffnessSelect			ADDED
IfcWarpingStiffnessSelect			ADDED
IfcBoundaryEdgeCondition
TranslationalStiffnessByLengthX			MODIFIED	Name changed from LinearStiffnessByLengthX to TranslationalStiffnessByLengthX. Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
TranslationalStiffnessByLengthY			MODIFIED	Name changed from LinearStiffnessByLengthY to TranslationalStiffnessByLengthY. Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
TranslationalStiffnessByLengthZ			MODIFIED	Name changed from LinearStiffnessByLengthZ to TranslationalStiffnessByLengthZ. Type changed from IfcModulusOfLinearSubgradeReactionMeasure to IfcModulusOfTranslationalSubgradeReactionSelect.
RotationalStiffnessByLengthX			MODIFIED	Type changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
RotationalStiffnessByLengthY			MODIFIED	Type changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
RotationalStiffnessByLengthZ			MODIFIED	Type changed from IfcModulusOfRotationalSubgradeReactionMeasure to IfcModulusOfRotationalSubgradeReactionSelect.
IfcBoundaryFaceCondition
TranslationalStiffnessByAreaX			MODIFIED	Name changed from LinearStiffnessByAreaX to TranslationalStiffnessByAreaX. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect.
TranslationalStiffnessByAreaY			MODIFIED	Name changed from LinearStiffnessByAreaY to TranslationalStiffnessByAreaY. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect.
TranslationalStiffnessByAreaZ			MODIFIED	Name changed from LinearStiffnessByAreaZ to TranslationalStiffnessByAreaZ. Type changed from IfcModulusOfSubgradeReactionMeasure to IfcModulusOfSubgradeReactionSelect.
IfcBoundaryNodeCondition
TranslationalStiffnessX			MODIFIED	Name changed from LinearStiffnessX to TranslationalStiffnessX. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
TranslationalStiffnessY			MODIFIED	Name changed from LinearStiffnessY to TranslationalStiffnessY. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
TranslationalStiffnessZ			MODIFIED	Name changed from LinearStiffnessZ to TranslationalStiffnessZ. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
RotationalStiffnessX			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
RotationalStiffnessY			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
RotationalStiffnessZ			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
IfcBoundaryNodeConditionWarping
TranslationalStiffnessX			MODIFIED	Name changed from LinearStiffnessX to TranslationalStiffnessX. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
TranslationalStiffnessY			MODIFIED	Name changed from LinearStiffnessY to TranslationalStiffnessY. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
TranslationalStiffnessZ			MODIFIED	Name changed from LinearStiffnessZ to TranslationalStiffnessZ. Type changed from IfcLinearStiffnessMeasure to IfcTranslationalStiffnessSelect.
RotationalStiffnessX			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
RotationalStiffnessY			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
RotationalStiffnessZ			MODIFIED	Type changed from IfcRotationalStiffnessMeasure to IfcRotationalStiffnessSelect.
WarpingStiffness			MODIFIED	Type changed from IfcWarpingMomentMeasure to IfcWarpingStiffnessSelect.
IfcStructuralLoadConfiguration			ADDED
IfcStructuralLoadOrResult			ADDED
IfcStructuralLoadTemperature
DeltaTConstant		X	MODIFIED	Name changed from DeltaT_Constant to DeltaTConstant.
DeltaTY		X	MODIFIED	Name changed from DeltaT_Y to DeltaTY.
DeltaTZ		X	MODIFIED	Name changed from DeltaT_Z to DeltaTZ.
IfcSurfaceReinforcementArea			ADDED
IFCTOPOLOGYRESOURCE
IfcAdvancedFace			ADDED
IFCUTILITYRESOURCE
IfcChangeActionEnum
NOTDEFINED			ADDED
MODIFIEDADDED	X	X	DELETED
MODIFIEDDELETED	X	X	DELETED
IfcOwnerHistory
ChangeAction			MODIFIED	Instantiation changed to OPTIONAL.
IfcTable
Name	X	X	MODIFIED	Type changed from STRING to IfcLabel. Instantiation changed to OPTIONAL.
Rows			MODIFIED	Instantiation changed to OPTIONAL.
Columns			ADDED
IfcTableColumn			ADDED
IfcTableRow
RowCells			MODIFIED	Instantiation changed to OPTIONAL.
IsHeading			MODIFIED	Instantiation changed to OPTIONAL.
IFCMATERIALPROPERTYRESOURCE			DELETED
IfcExtendedMaterialProperties	X	X	DELETED
IfcFuelProperties	X	X	DELETED
IfcGeneralMaterialProperties	X	X	DELETED
IfcHygroscopicMaterialProperties	X	X	DELETED
IfcMaterialProperties			MOVED	Schema changed from IFCMATERIALPROPERTYRESOURCE to IfcMaterialResource.
IfcMechanicalConcreteMaterialProperties	X	X	DELETED
IfcMechanicalMaterialProperties	X	X	DELETED
IfcMechanicalSteelMaterialProperties	X	X	DELETED
IfcOpticalMaterialProperties	X	X	DELETED
IfcProductsOfCombustionProperties	X	X	DELETED
IfcRelaxation	X	X	DELETED
IfcThermalMaterialProperties	X	X	DELETED
IfcWaterProperties	X	X	DELETED
IFCPRESENTATIONDIMENSIONINGRESOURCE			DELETED
IfcDimensionExtentUsage			DELETED
IfcDraughtingCalloutElement			DELETED
IfcAngularDimension	X	X	DELETED
IfcDiameterDimension	X	X	DELETED
IfcDimensionCalloutRelationship	X	X	DELETED
IfcDimensionCurve	X	X	DELETED
IfcDimensionCurveDirectedCallout	X	X	DELETED
IfcDimensionCurveTerminator	X	X	DELETED
IfcDimensionPair	X	X	DELETED
IfcDraughtingCallout	X	X	DELETED
IfcDraughtingCalloutRelationship	X	X	DELETED
IfcLinearDimension	X	X	DELETED
IfcPreDefinedDimensionSymbol	X	X	DELETED
IfcPreDefinedPointMarkerSymbol	X	X	DELETED
IfcPreDefinedTerminatorSymbol	X	X	DELETED
IfcProjectionCurve	X	X	DELETED
IfcRadiusDimension	X	X	DELETED
IfcStructuredDimensionCallout	X	X	DELETED
IfcTerminatorSymbol	X	X	DELETED
IFCPRESENTATIONRESOURCE			DELETED
IfcFontStyle			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcFontVariant			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcFontWeight			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcPresentableText			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcTextFontName			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcColour			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcTextFontSelect			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcColourRgb			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcColourSpecification			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcDraughtingPreDefinedColour			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcDraughtingPreDefinedTextFont	X	X	DELETED
IfcExternallyDefinedTextFont			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcPlanarBox			MOVED	Schema changed from IfcPresentationResource to IfcPresentationDefinitionResource.
IfcPlanarExtent			MOVED	Schema changed from IfcPresentationResource to IfcPresentationDefinitionResource.
IfcPreDefinedColour			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcPreDefinedItem			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcPreDefinedTextFont			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IfcTextStyleFontModel			MOVED	Schema changed from IfcPresentationResource to IfcPresentationAppearanceResource.
IFCPROFILEPROPERTYRESOURCE			DELETED
IfcReinforcingBarRoleEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcReinforcingBarSurfaceEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcRibPlateDirectionEnum			DELETED
IfcSectionTypeEnum			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcGeneralProfileProperties	X	X	DELETED
IfcProfileProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcReinforcementBarProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcRibPlateProfileProperties	X	X	DELETED
IfcSectionProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcSectionReinforcementProperties			MOVED	Schema changed from IFCPROFILEPROPERTYRESOURCE to IfcProfileResource.
IfcStructuralProfileProperties	X	X	DELETED
IfcStructuralSteelProfileProperties	X	X	DELETED
IFCTIMESERIESRESOURCE			DELETED
IfcDataOriginEnum			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcTimeSeriesDataTypeEnum			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcIrregularTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcIrregularTimeSeriesValue			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcRegularTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcTimeSeries			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.
IfcTimeSeriesReferenceRelationship	X	X	DELETED
IfcTimeSeriesValue			MOVED	Schema changed from IFCTIMESERIESRESOURCE to IfcDateTimeResource.

Link to this page