I would recommend to export parts, that you cannot reproduce in ArchiCAD, from Maya. They comes as library parts, that later you can convert into morph if you want. This is the best way to do it.
You can try different file formats for export. I think Collada (dae) is the most accurate.
You also can try ModelPort Plug-In, that supports plenty of 3D formats.
https://archvista.com/modelport/