I have made some derived parts from an assembly. I copied over one of the files w/ a similar part. For some reason it didn't want to subtract parts from my lofted part so I made one a little dumbed down and now it works. Now I keep getting a prompts warning me that the part was saved over, I expect that a few times but now after saving over and over again I have to keep dealing w/ that annoying warning. What do I have to do to get that crap to stop coming up?