yeah, you should always be able to restore ans set it up from a backup with the previous library.If for example it doesn't work, would syncing the phone with the existing iTunes library restore it back again...?
I guess I will just have to test it out later!
Thanks! I regularly move them, by manually drag and drop them from iPhone as "digital camera" device to a folder on my computer. I have never dared sync them And I am not entirely sure the drag and dropping from computer to iPhone would work, so I know I have them on my computer but I wanted to be sure I could have them back on my iPhone.pictures should be backed up in your iPhone backup file in step 2. Although I would encourage you to sync them to your computer first so they are not just in your iPhone/iPhone backup.