I've done jailbreak a few weeks ago to try some new apps and games before buying them. Today I've updated my iPod touch to a new version and I've purchased some apps I liked. To sync iPod touch with new app I have deleted the previously cracked app and then I realized that all data associated to that app was lost.
I don't want to loose data from other apps. How can I re-install with purchased version of the same app without loosing data?