Obj export

I’m exporting geometry in modo from rhino, through obj format. When I import in modo, the group I’ve created in rhino have random names. How does it work for the obj exportation group names? how rhino choose these names that are totally random to me?
best regards, Roy

Screenshot 2020-05-29 at 10.05.16

Check if the assigned material names are where those group names are coming from. If they support FBX, try that format from Rhino too. The layers should translate to groups… at least they do in Maya.

The names are not coming from assigned material.