How was the data uploaded from APPS10 to IFS Cloud/APPS11?

The database data came from a database copy.  I am thinking we are missing some setup steps.  In apps10 we had a custom version of achformat called something else.  If we create a new payment method using that then we can see the payment addresses but our accounting team needs the file format from the custom version which calls a custom api.  I would have thought we could just modify the file output using the oob achformat in IFS but they insisted we can’t.  I am trying to either get the custom version to work or if it is possible find how to modify the file output for the oob achformat.

From a functional/output standpoint, it should be two pieces.   The first is the output format (the data that the bank needs) and then the second is the ‘action/event’.