What if I need to resubmit a request not in default currency with document date in future? (Xero)

What if I need to resubmit a request not in default currency with document date in future? (Xero)

For requests whose document date lies in the future, the automatic exchange rate will be applied based on the current date (unless a manual rate has been set) and will be recalculated every day until reaches the document date. If you change a request and resubmit it for approval, the current day exchange rate will be applied.