Hi Micha, in the just recently released Mar-17 v3 beta there is a new function you requested for exporting to OBJ using the style name as the group name in the OBJ file.

That should then allow you import into Rhino using the option in the OBJ importer to map group names to layers - won't that improve your export into Rhino?

Here's the relevant part of the release notes:

Updated OBJ export settings - added a new setting in moi.ini for OBJ export to help with mesh transfer into Rhino. [OBJ Export] WriteStylesAsGroups=n When this is enabled by changing to WriteStylesAsGroups=y then the style name will be written as the group identifier when generating the mesh. This allows for using the setting in Rhino's OBJ importer for importing groups as layers to get the mesh back to the same layer as the original object. Requested in the forum here: http://moi3d.com/forum/index.php?webtag=MOI&msg=5637.1

- Michael