Have a long term (3 years) X visa issued in Nanjing and want to rent an apartment in Shanghai

Hello,
I have a long term X type, or residence permit, issued at Nanjing. When i rented an appartment here I registered at the local police station with my address. now I want to move to Shanghai and rent an apartment there, and will probably have to register with the local police station too. Is it a problem if my X type has been issued at Nanjing?