Hello ​@bruno, thank you for posting! I'm happy to report that IfcZones are supported in the new implementation of the IFC reader in FME 2024.1 (eg. use the IFC_API Reader). Unfortunately, we only support reading IfcZones at this time, writing support is still underway. 

Zones will be read as features without geometry that have attributes tracking which elements belong to the Zone represented by the feature (eg. ifc_group_member{}). Happy to help, Kailin. 

Hello Kailin,

Thank you for your answer. IfcZone are now read. But, if I use the Ifc_API Reader, the GeometryPropertyExtractor can not extract a given Trait which is extracted when I use the IFC STEP/XML reader.

Do you have an idea why?

Thank you in advance

Best regards

Bruno

Hello ​@bruno, thank you for the update! The new IFC Reader does not require you to extract traits - properties will be stored as a feature attribute. You should either see them in table view, or they may be unexposed in the Feature Information window (you can use the AttributeExposer to bring them into table view!). Happy to help, Kailin.