In the continuing set of iCloud-related releases, Apple has pushed out Aperture 3.2 to provide compatibility with iCloud’s Photo Stream feature. A number of other minor changes round out the release, notably support for left and right swipe gestures for navigating between photos, the pinch-to-zoom gesture activating Zoom mode in the Viewer, relaunching into Full Screen mode if the app was in Full Screen mode when last quit, support for Microsoft Outlook for sending photos via email, and an option in the Import window to delete photos from an iOS device after import. Bugs have been fixed too, including a crashing bug when using brushes to apply adjustments, problems with Loupe displaying magnification levels between 50 and 100 percent, incorrect color profiles on externally edited images, and incorrect cursor icons when using the Lift & Stamp tool in Split View and Viewer Only modes. ($79.99 new from the Mac App Store, free update, 635.76 MB, 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.