So I'm collaborating on a Soundtrack Pro audio project with an editor. We meet every other day or so, and sync the project folder with arRsync (bidirectional). Reason being we are both working on segments of the larger project but never on the same segment (ie we never touch the same multitrack file or project files). This has worked great half dozen times but now a file has mysteriously reverted to its original, pre-edited, state. Brilliant me, made a back up but then over wrote the back-up with a later version which seems to after this cluster f**k happened and my tertiary backup (timemachine) didn't have his media asset partition on its list of things to back up. Aside from being certain that the file in questions was not opened/manipulated by the other computer after it was manipulated by the computer where it was actually edited, there are actually two media files (SoundTrack Audio Project files) making up the multi track file in question. One of these is FINE. And one devolved. A. Is this an rSync/arRsync issue, and is there an alternative who won't cost me valuable time? B. Is there any (relatively) easy way to get this file back?? Its about 3-4 hours of work lost. I don't want to spend tons of $$$ or another 4-6 hours trying to recover it but I also don't want to redo it. I know this reads like a word problem from hell, but I'm hoping someone here can help me out. . .