Good morning I create a multisite with classify (like

Good morning
I create a multisite with classify (like Gumtree in a way) with location in subfolder : mysite.com/town_001 to mysite.com/town_101
I have members for each
As soon a member want or have to change the town, he must create a new account.
Is there a way to create account with all suscribe options to a new town without a heavy hand work ?
Theres too much members and work to do if.
The site is still in study phase and I must find a solution. Thank you very much