Is there a way to track IDR Invoices not imported due to missing Supplier

We would like to know the IDR behavior in the following case -

If the Supplier tagged to the IDR Invoice does not exist in Oracle, we understand that the invoice will not be created in Oracle. However, is this IDR invoice stored somewhere where it can be tracked? and also if the supplier is added and the import program is re-run will it be imported or should the invoice be re-sent to the IDR mailbox?

We are looking to identify and track such invoices so that corrective action can be taken accordingly.