As the title indicates, I am needing help in syncing all of the apps on my iPhone 3GS from within iTunes. I haven't actually synced my iPhone to my computer in well over a year I imagine. I have downloaded scores of apps on my iPhone through the built in App store on the phone. I was able to successfully sync my iPhone and upgraded my OS to 4.2.1. I figured I might as well back up my apps and went to the Apps tab within iTunes while my phone was connected. When I click on the "Sync Apps" button, I get the following pop up message: "Are you sure you want to sync apps? All existing apps and their data on the iPhone will be replaced with apps from this iTunes library". My iTunes library only shows one app, Angry Birds. I have a ton of apps on the phone itself. The way I read it is, if I actually follow through and attempt to sync my apps, iTunes will blow away all of my downloaded apps and leave me only with Angry Birds. Surely that can't be the case? I would think iTunes would want to import and sync whatever new apps you have on your iPhone to your iTunes account, not the other way around. I am afraid to actually go through clicking the sync button for my apps as I don't want to lose them all. Any advice here would be greatly appreciated. Thanks!