Unable to make bank account for suppliers under other companies

Hi all,
Running on a fresh install of v12.1.x and importing my suppliers. Previously I was able to save IBAN numbers in the supplier doc. Now the bank is a separate doctype which is linked? Upon trying to save this bank account for the various suppliers I run into the following issues:

  • GL Account: It doesn’t let me change the company for the GL. I have multiple companies in my ERP Instance and would like this attached to another.

Is this a bug or am I missing something? I feel my needs are very simple and the current account module is over engineered in many ways

Thank you

The design of bank accounts is just flawed already. You cannot select the supplier’s bank account because the selection only lists Company bank accounts.
That does not make any sense at all! I wonder who coded this with which state of mind!