Oliver Peters was kind enough to review Matchback Magic http://bit.ly/bMob5D
Matchback Magic “protects†files against human error by “injecting†metadata from the full-quality master files into the proxy media files. Once that’s done, no matter what happens to the proxy media – change timecode, reel numbers, files names, etc. – Matchback Magic can conform an edit so that the final sequence frame-accurately matches the rough cut and media is properly relinked.