Hi Rebecca,
what you describe sounds like the standard way with posting the payment on a transfer account. You get one DTAUS, as a result you have only one balancing line in the payment journal. This amount is posted to the transfer account. When you post the bank account statement, you post against the transfer account. There is a prerequisite though (I assume you're talking about german banking in NAV): You have to set up the transfer account in the bank account posting group.
As for the statement: Lots of banks are giving only one line for the DTAUS in the statement. Usually you wouldn't need more, because posting the payment journal would apply the invoices of the vendors, and you post the statement line against the transfer account. It is different for foreign payments, though.
It is handy if you have GL Open Items Management for doing the reconciliation of the transfer account, especially if you have foreign payments too. In the german version you would need an Add-On like opPlus or Smart IT Open Items for this functionality, though.
with best regards
Jens