皮匠老師: about change of address

皮匠老師:

My 485 uses my relative's address,that is, use "care of (CO"

I moved recently. But I still want to use my relative's address because I believe that one is permanent.

I understand that according to the law I need to file the form "change of address" or call the USCIS to update address. My concern is that if I file the form, they will change my mailing address to my resident address, that will be inconvenient to me because I do not know how often i will move.

Can I know your suggestion? Big thanks!