In general computing, I often use 'Save As...' to preserve an original document while I mess around with a copy of it. When I did this in Logic the other day, it totally screwed up my original. I had the band over and said, "here's the version that is exactly the same as it was when you left" and then proceded to play something no one had ever heard before. I'm still trying to figure out what happened, but after noticing the 'Save Copy As...' feature, I think I have an idea. Does 'Save As' share audio files between versions? If so, does 'Save Copy As' create copies of the files so they can be edited in total isolation? Typing this out, it seems like a no-brainer, but why would the terminology be totally different from every other computer application/program I've ever used? And on such an important feature at that... d'oh! I stretched the time of the region and it looks like that is what screwed up the original. Anyone have tips on workflow improvements here?