1. If I want to insert or attach another drawing to my current and then draw something over it (use attached drawing as background), is it possible to set that OSNAP doesn't work for source drawing's objects, but work for curent drawing objects?
Shall I use some other method than XREF or INSERT dwg to manage this?
2. Another question - if I use XREFs and delete some layers in source drawing then in reference drawing these layers still exist and I can't delete them, AutoCAD says "cannot delete XREF depenedent layer" or something like this. How can I manage this other way than detaching source drawing and then attaching it again?