When Keep status is not selected, invoices are given the status Transferred upon transfer.
When Keep status is selected, invoices keep their status after transfer.
You specify this separately for each invoice status. You can specify different handling for invoices with different status.
The most common use for Keep status is when you want to transfer invoices to an external workflow immediately after scanning, while still keeping them in the Kofax ReadSoft Invoices database for further processing.