Version 2.41.142.sp3 lok 21. AutoCad 2010. Vista.
When we run this simple lisp, we lose our CID#937 sub-assembly grills. They are still there in the drawing after running this lisp, but disappear after we save, close, and re-open. Presently, we copy to base point all CID#937´s, run the lisp, save, close, reopen the drawing, paste the CID#937´s back into the drawing, save, and close.
Any ideas? (I know enough about lisp to know I know nothing about lisp)