My grandson started a base on his ipad, low level of course. He also started a guild which included myself and another family member. He then asked me if he could use my base and I said yes. We went through the procedures and he now has my base on his ipad and his guild. He is finding that this "upgrade" is more than he can cope with and would like to switch back to his old base and keep the guild. Is it possible to get him back to his old base; reverse the procedure? Thanks in advance for any help. Bearbelle.