Automatic Payment process bank response file

We are in the process of implementing an automated payables interface for foreign currency invoice payment processing with our bank.  To do this, we are generating automatic payment groups (R04570 process) which in return, creates a K batch and a custom CSV file that we produce for our bank using the payment records generated.

Our dilemma is that the automatic payment process, as we're using it now, uses the current day's FX rate, as stored in our system. The bank is using the up-to-minute market rate when converting our payments to the currencies we're paying (USD base account paying multi-currencies). When we post the K batch, JDE posts the amounts to the bank g/l based on JDE's rates since it does not know the bank's yet.