Hey Michael!
Just wanted to tell this issue with the vertex map. And since I'm new to Modo and just testing MoI this was an issue I couldn't solve for a day and was really happy to have found the comments and this tutorial I've mentioned.
So my intention was to export some l beveled objects (lots of facets) to further render in Modo and so I didn't know what was going on at this time.

My suggestion would be to implement a checkbox for switching on and of this v-map-export even to clear things up.