I recently jailbroke my phone and have a question about the last backup I did before I jailbroke. Is there any reason I should save that backup somewhere for restoring purposes? In other words, is that backup useful to me in any way since it was the last backup I did before I jailbroke? If so, what should I do with it? I have already synced my phone since I jaibroke so a new backup has been created. Is my last "pre-jailbreak" backup gone forever now?