Drawing of mirrored part: dimensions detached!

I'm a long term Solid Edge user and now I have bought a SWX Standard license due to request of a customer.

I'm a little bit concerned about this fact:

I have a part_1 in an assembly, and a part_2 that is the mirror of part_1. So I created drawing_1 and after this copied it to drawing_2 and changed the reference to link this last drawing to part_2.

The problem is that when I rebuild drawing_2 to update it to the link to part_2, ALL dimensions and annotations are detached, and this is a very big waste of time.

Question is: is it an error by me in the procedure? Or is it a limit/bug of SWX?

SWX 2010:

http://www.youtube.com/watch?v=HDGMwWkiWHc

SolidEdge V20:

http://www.youtube.com/watch?v=E2ykCTw3xt4

Regards, Alessandro.

SolidworksDrawings And Detailing