Hello Dear Mr. Nagy and Mr. Ricmerz,
I also have the problem that the IFC class for Doors are being affected after the Exportation to IFC, if the Door is Grouped with other components from other Categories and IFC classes.
Individually the components are OK, and in the ALLPLAN software the IFC classes are working without problem.
Is only after the IFC generated, that the Modelgroups ID and components, change the IFC class of specific Doors, but the "Öffnung" or door opening is not affected.
Please can you clarify this.
If need it I can provide attachments for better understanding.