In an industrial project we have referenced the equipment as ifc files into our project model. This works fine except for the floor plans in which the ifc files show as though they were dwg files that had been directly imported into Revit and not into families. The ifc files are sectioned properly when a section runs through them. Even if I align a 3d view to the floor plan in question the device (which runs from ground floor level up to the first floor) is shown in cut graphics. Only the floor plan view does not seem to respect its cutting height. The ifc files contains exclusively IfcBuildingElementProxy entitites.