There is no mentioning of this in Revit IFC Manual 2.0 but the parameter IfcExportAs/Export to IFC As/Export Type to IFC As doesn t work for some object categories. Overriding should be possible no matter the category. Categories that we often need to override, where IfcExportAs doesn t work, are:RoofsCurtain SystemsWall Sweeps (when embedded into the wall type they should When will this be addressed? Wall Sweeps embedded into wall types are further more problematic since they are exported as individual objects, not as part of the wall. There s no way for us to control the naming nor the classifications of these wall sweeps and we struggle in complying with IFC requirements.

IfcExportAs/Export to IFC As/Export Type to IFC As not respected for several object categories

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There is no mentioning of this in Revit IFC Manual 2.0 but the parameter IfcExportAs/Export to IFC As/Export Type to IFC As doesn't work for some object categories. Overriding should be possible no matter the category.

Categories that we often need to override, where IfcExportAs doesn't work, are:

Roofs
Curtain Systems
Wall Sweeps (when embedded into the wall type they should

When will this be addressed?

Wall Sweeps embedded into wall types are further more problematic since they are exported as individual objects, not as part of the wall. There's no way for us to control the naming nor the classifications of these wall sweeps and we struggle in complying with IFC requirements.