Can anybody advise me on this one. We share 1 apple i/d in our house for all our iOS devices. My daughter has her own game centre account and my wife has just decided she would prefer her own. I know how to set up a new one with a separate apple i/d but I want to do this without loosing her progress on various games. If I just logout of my account on her iPad and log in to the new one, am I right in thinking some games will start over?