Q: I recently formatted my Windows 7 PC and reinstalled iTunes. I forgot to de-authorize iTunes from my previous Windows installation, so I had to re-authorize my PC as well. When I re-authorized with the iTunes Store and connected my iPad, the “Sync Apps” in iTunes was unchecked. When I click on it to select it I get a warning that “All existing apps and their data on the iPad will be replaced with apps from this iTunes library.”…