Hi, I'm working on a new drawing and what I can't seem to solve is the fact that after I save a document then re open it later my parts are replaced with SW part. In the image I inserted a part (QT number) but bolt symbol still there. I did a replace to get the right part and it shows up but once I save it and reopen it it reverts back to its old form. I would like to delete this reference so my part stays but have been unable to find it. Anyone know where to look and how to fix this? It's never happened to me before. Oh, and the original was done in SW2010 and this file was updated in 2012 SP 2.0