In the IFC_MappingScript.set file found in the \setting sub-folder of the delivered AECOsim Building Designer datasets, there is a section that appears to map both Free and Slab forms to the IfcSlab entity type. Can I change this? We would prefer not to map Free Forms to IFC Slabs since we typically use Free Forms as other object types; e.g., curtain walls. Instead we would prefer to use Family + Part mapping since these objects will have different parts assigned.
Correct, the section being referred to in the IFC_MappingScript.set file does define how legacy Slab and Free Form objects will be mapped to IFC format since they would not contain DataGroup data. Although this file was not intended to be modified by the end user, it is development's opinion that modifying that specific section in order to prevent Free Forms from exporting as IfcSlabs should pose little to no risk.