Can we pass DFF data from the Transfer Order to DFF Accounts Receivables?

Hi,

We have a client requirement where an internal requisition would be created for export orders which a specific currency conversion rate. This internal requisition would create a Transfer Order.

As per business the shipment of the Transfer Export Order happens after at least 2 months for the date the transfer order gets created and the this time, the currency conversion rate gets modified.

The two queries I need to ask are:

1. Is there a way that the currency conversion rate be update at the time of shipments so that we can update the rate while shipping or if the creation of the transfer order be delayed and it picks the conversion rate at the time when the transfer order gets created.