Hi there,Here's the thing: I have an IFC file ported over from ArchiCAD, and all the de facto ceilings are floor types. Now that means that I don't have ceiling plans which would be useful for laying the conduits, , fittings, etc, but would be most useful for placing ceiling lighting. Is there a way to change all these "ceiling-floors" (these are 'fake' ceilings we are talking about, so there is space between them and the structural ceiling) into ceiling types? Unfortunately I can't just select them and then change them like I could change the layer in a CAD dwg.Cheers,Arthur