How to massively update bank branches ?

Summary:

Massively update of bank branches

Content (required):

Bank Branches were initially loaded using the RapidImplementationForCashManagement.xlsm without BIC Code field populated.

How can we massively update the bank branches already created in order to add the BIC Code information?

I've tried using the same file used to create the bank branches and adding the BIC Code but no update happened.