18 years ago
you had two instances of part X and you decided you needed to make one
of the 2 X parts a different part, you use a command called "Make
Unique". You would then give the part a new name, say Y, and then
instead of having 2 X parts you would have a part X and an identical
part Y. You could then open part Y and make the chages you needed to.
Doing a Save as Copy isn't really what I want because I would then have
to remove one instance of part X and then bring in part Y and redo the
constraints, that is exactly what I am trying to avoid.