Hello

I tried to open a file originally created in ArchiCAD, in Revit. I have only IFC file available. It is well made and filled with information. When imported into Revit I used addon from GraphiSoft "IFC / ArchiCAD Connection Add-In for Revit 2014". All was imported normally, except the exterior walls, windows and doors. They do not belong any family and can not be edited in any way except "Edit In-Place". All information about these objects was lost. At the same time everything si OK with the internal walls and openings.

What is the problem? Did anyone else experience this?