in this version of iTunes?
FYI, "everything on iphone will be replaced with itunes library" is the norm. Any time you plug the phone into the computer and sync it, the iTunes library adds or removes items from the iPhone.
I purchased a iphone5. I did a restore from a backup and everything worked great. Two days ago my computer did a update when I did a shut down. It processed everything and shut down. Yesterday I connected my iphone up to itunes which I discovered I now have a complete new itunes. When I check sync apps I get the message everything on iphone will be replaced with itunes library. Does anyone know what happen to my other itunes that I have using for the last 4 years or so. Thanks