Apple has released Logic Pro X 10.0.7, a massive update with over 330 enhancements and bug fixes. The biggest news is that the professional audio app now supports 24 simultaneous processing threads on 12-core Mac Pro models, which should provide a nice boost in performance. The release also enables you to insert current volume, pan, and send values for all selected tracks at the playhead position; improves the Drummer track’s timing if Low Latency mode is enabled; enables you to paste automation at the playhead or marquee selection area; consolidates the Snap, Alignment Guides, and Snap to Grid settings within the Snap menu; and improves import and export of XML with Final Cut Pro X. ($199.99 new in the Mac App Store, free update, 828 MB, release notes, 10.8.4+)
Extract Directly from Time Machine
Normally you use Time Machine to restore lost data in a file like this: within the Time Machine interface, you go back to the time the file was not yet messed up, and you restore it to replace the file you have now.
You can also elect to keep both, but the restored file takes the name and place of the current one. So, if you have made changes since the backup took place that you would like to keep, they are lost, or you have to mess around a bit to merge changes, rename files, and trash the unwanted one.
As an alternative, you can browse the Time Machine backup volume directly in the Finder like any normal disk, navigate through the chronological backup hierarchy, and find the file which contains the lost content.
Once you've found it, you can open it and the current version of the file side-by-side, and copy information from Time Machine's version of the file into the current one, without losing any content you put in it since the backup was made.