Hi Matadem, for the general case the best practice is to not try to import polygon mesh data into Moi.

Usually polygon mesh data is best handled in a polygon mesh editing program and not in a CAD program.

The main exception to that is if you have a mesh configured for having sub-d smoothing applied to it. In this case you can export the subd control cage and convert it into a smooth surface in Moi using SubD > Create > From file.

So there isn't exactly a single answer that fits all polygon meshes, it can depend on the particular characteristics of the mesh.

A mesh from a 3d scanner with 10 million triangles is a lot different than a sparse all quad sub-d model control cage.

Do you maybe have an example mesh that is representative of the type of thing you would like to convert?

- Michael