Import Foreign currency Journal

Experts,

We have a third party billing engine which acts as receivables sub-ledger . Suppose if we create foreign currency invoice and import it to GL without  conversion, Is it possible to have  the conversion of journal entry happen at GL ? .

If yes is there any other setup required , we have in place "Entered Currency balancing account and Suspense account setup in GL Ledger .

Ex .Create customer invoice  in Foreign currency (Ex. Functional Currency in ‘EUR’ create AR Invoice in foreign currency ‘USD’ ) .

Journalise the transaction and import it into GL , is it possible to convert the imported journal into functional currency in GL.