I have about 6 apps that are already on my iPT. I haven't updated or downloaded in a LONG LONG time, probably over a year. I see a few new apps and wanted to add them to the device. I have them downloaded but they aren't going to the device and it seems to want me to delete everything and start over. In iTunes, I look at my device and it doesn't show any of my current apps. How do I get it to just add the new apps? Do I have to do a backup, then add the new apps or will that even work?