Add IBAN to existing bank account in Cash Management ebs R12.2.10

Dear gurus,

In Cash Management our corporate bank partner asked us to transmit the IBAN when using the Bank Account Transfer (BAT) function to pay from Payables. Consequently, in Cash Management we added the IBAN (it was null prior to this update). When we create BAT payments the IBAN is not reflected in the EFT output. Instead the Cash Management account number prints.

My question is - if a bank account has already been used in Cash Management - can it be modified/updated post factum? Or does it need to be end-dated and then a new one created with the IBAN details ?