Bug importing dwg with Set layer material to layer color option On

just notice that when importing a dwg and using Set layer material to layer color the materials are applied to the layer correctly, but they are not shown correctly in the layermanager.

Also the name are missing.

If i save the file and restart Rhino, i can see the material in the layer manager, and the names are not (unnamed) but Custom01, Custom02 etc.

Do you know any work around to this problem?

assigned to Rhino category