Your statement does not make sense. Does any money on once account need to be justified where it comes from? many borrow money and then it is in an account. others have the money but tomorrow a car or something else will be bought. And all the money is gone. that is why an amount in your account means nothing at all.
I have been doing my yearly extension in CM for many years. You need a copy of your rental contract. In all these years i never had to show a map of where i live.