Geometry appears in thumbnail but not in file when open

Hi guys, when I save my ArchiCAD file as a Rhino file to work on in Rhino some geometry is missing.
Not sure if this is an export issue from ArchiCAD or an import issue with Rhino. As in the Rhino thumbnail
all the geometry appears but when I open the file half of it is missing?

Hello- off hand that seems like an archicad problem - I’d check with them first.


The thumbnail is not looking at the file.
It’s a screenshot thumbnail that is saved in the 3dm file when Rhino is closed.
It’s just a bitmap.