Hello~ Is there any possible method to identify any data loss in the IFC file (IFC 4, Reference View) that exported from Archicad 27 ? Operating system used: Windows 10

I’m trying to use the defined property mapping rules in “Map IFC Properties for Export” (Figure 1), to link the all properties in native to each IFC entities. Most of entities were successful mapped, e.g. IfcWall, Column, Slab, Door (Figure 2). Howev...