INQ: How to export Revit Category as Revit user defined property set?

[Moult]

Inquiry description

If I export using Export Revit property sets then I can see the Category property. However I can't figure out how to export it using a user defined property sets config file. Here is what I've tried:

PropertySet:	LL_Revit	I	IfcElement
	Family	Label # works
	Family and Type	Label # works
	Type	Label # works
	Type Id	Label # works
	Category	Label # nothing
	Revit Category	Label # nothing
	Category Id	Label # nothing
	Category Name	Label # nothing

Revit Version

2026.4.x

IFC for Revit Addon Version

26.4.1

Windows Version

11 25H2

[ArtemHnatko]

This issue is also reported in Jira as "REVIT-248491" and is currently in the "Open" status.