Import Rhino mesh into Archicad

[Diora]

Hey guys!

I am having trouble at seeing my Rhino mesh in Archicad. 

I created a mesh of a project in Metashape from point clouds taken. Then I exported the mesh of Metashape in obj format to Rhino and there I cleaned it up a bit by reducing number of faces and polygons, to make it lighter. 

After I saved it in .3dm format and tried to import it in Archicad using it as library object or merging it. But the result is that when I import it, I cannot see it at all in Archicad.

For the record, I did a test of building Rhino model (small cube) and after import I could see it in Archicad. So I assume that it has something to do with the fact that I import a mesh not a model. 

I attach a photo how the mesh looks. Thanks in advance!