game center issue ???!!!

Hi all ,

please help me to solve my problem.

the problem is i have got COC in my Iphone , and my son want to creat a new village in his i pod and he has got a different account in game center but the issue is when he start playing COC a message dissapear saying do you want to save your current village,,,,,,,,,,, ? then i have pressed OK my village shows ????!!!! why he want to creat his own village why my village appear in his ipod and how can this problem be solved .



Regards