1 person found this helpful
if you are on 2014 or newer, you can open the drawing and right click on a view and select replace model.
on any version of SW (at least 2008 or newer), you can open SW, file - open, select the drawing (but do not open yet), click the references button in the bottom of the open dialog, from there double click on the old part listed in the references, and browse to the new part.
Thank you very much.
It hepled me a lot :-)