When you are in the To Enter Invoices inbox and you submit an invoice it removes that item from the to enter inbox. If you were to then hit the previous button it would not take you back to the invoice you just submitted. In legacy you are able to submit an invoice and hit previous to go back to that invoice and also hit next to go to the next invoice to be entered in the stack. Level 4 would like the same functionality to exist in Agilink.