Changing bank name in One Step Setup

I successfully added a bank to an account for one-step download. This worked well. My account with that bank has been moved to another bank. So, on the "Account Details" I have selected "Online Services", and then "Deactivate". However, when I to "set up now..." one-step setup with the new bank, there is no way to select a new bank. The old bank name keeps showing in the "activate one step update" window and it cannot be changed anywhere. Any suggestions to an existing account to a new bank?