When I upgraded to 4.1 and JB I forgot to back up Gas Cubby using the app's online sync capability (gas Cubby tracks car milage & other data), however I did have a recent iTunes backup, so I knew my data was on my iMac somewhere. Problem: I wanted to restore this app's data without doing a formal "Restore" (lots of stuff I didn't want loaded again). Solution: (Mac only, but it is free!): the "iPhone/iPod touch Backup Extractor" application from the website http://supercrazyawesome.com/ Install it and have it scan your backups; pick the app you want to extract and it pulls out the app's data files. In the case of Gas Cubby, I extracted the sqlite3 datafile and then ssh'd it over to the appropriate directory on the phone - worked like a charm!