I've tried these several times with different results. Some of the outputs work and some not. And I can't figure out yet whats the reason behind (Wall/Zone Type?).
My best workaround is to transfer the Brep of the Archicad Element into Rhino and use the "deconstruct Brep" in Rhino to get the surfaces and verticies etc. Perhaps you have to sort them visually or by list for your needs.