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wfajber
in reply to: m.joudivand

Somewhere else in this forum there is this exact example where the author is doing this with parts that are pipe hangers.

 

It identifies the parts in the model, and finds the 2D curves that are in the drawing view that were generated from the 3D model edges, and moves them to a new layer. 

I copied and modified it a bit. I can post it tomorrow if you cannot find the original.