Hi guys, I'm new here and i think this is a pretty great forum for new and old i-phone users. I'd like to ask since I'm stuck right now because I can't seem to push this button for fear of erasing all my data and restoring a non-updated backup and never being able to get my current data back again. Situation is, I've used an i-Touch for two years and all my data, apps, pictures, videos, are in it. It is backed up every time i go to i-tunes on my laptop. I recently bought an iphone4 and restored it with the i-touch data. i had successfully done this and iphone4 is working fine. i've managed to copy all the videos from my i-touch to my laptop using 4media iphone max as I manually add music and videos to my i-touch before and would like to do the same with the iphone4. So now, I try to tick on the "Manually Manage Music and Videos" on the main screen. When i click APPLY, a box pops up saying, "this i-phone is synced with another i-tunes library. Do you want to erase this i-phone and sync with this i-tunes library?" An i-phone can only be synced with one i-tunes library at a time. erasing and syncing replaces the contents of this i-phone with the contents of this i-tunes library." I only have two options to tick, ERASE AND SYNC, or CANCEL. When I cancel, of course the settings retain and i am unable to manually add music and videos. So the question is, do I erase and sync?? If i do, what happens? Will i retain my current data that is properly synced already to my iphone4? Or will it erase what I have and leave me with non-current data? Would appreciate help and sure advice on this as I can't afford to lose my current data and have no reference to restore on. Thanks guys. Sorry for the long post.