Deposit created in wrong BU

Hi,

We are using LockBox flat file to create deposits in Receivables. Recently, we made a change in the External Accounts setup by replacing the prior BU with another one. We did the same thing for Deposit Unit in Account Information tab. We did not change anything else since we want to use same bank account with the new BU. Prior BU won't have transactions in the future. However, deposit continue to be created under the prior BU. Is there something else that we need to change?

Thank you for your assistance

Armand