Apple has released Final Cut Pro X 10.1 with an extra helping of improvements and fixes to prepare for the release of the new Mac Pro. The update optimizes playback and rendering when using the Mac Pro’s dual graphics processors, and it paves the way for using 4K monitors with added support for monitoring video on the ultra-high pixel displays as well as creating titles, transitions, and generators in 4K resolution. Final Cut Pro X 10.1 also now enables you to collect multiple projects and events into libraries (for more on transitioning projects and events to libraries, see this Apple support FAQ). The release also makes it easier to move clips with transitions in the timeline and lift them out of the Primary Storyline with transitions preserved, clips can now be trimmed completely out of a timeline when using the rolling trim function, and importing AVCHD video no longer results in 5.1-channel surround sound audio being mixed down to stereo. ($299.99 new in the Mac App Store, free update, 2.20 GB, release notes)
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.