Maybe someone can help-
Upgraded to IOS 4.1........ and all the music I'd downloaded from Itunes on my phone since the previous IOS upgrade disappeared.
Although I synced the phone prior to the update- and it looked as if the songs & Apps had copied onto my mac.....they aren't in my library either.
When I look in my Itunes history they are all there.

Is it as simple as a restore or will that go back to factory setting and make things worse !!!!!

Any and all suggestions welcome !!!!