When you import the 3D object be sure your are in the solids command. I
dont think you have to be in the solids command to import but it can make it
cleaner.
wrote in message news:5058706@discussion.autodesk.com...
It will be "dumb" but you can import it into the appropriate family type and
then it will be schedulable and you can set its visibility to be off in plan
and add symbol lines as needed.