OIE and Expense Report Export to AP - how to limit expenses exported

Hi,

We are using OIE (12.1.3) to create expenses which are then paid using a custom extract to be uploaded to Payroll. We want to switch to using Payables to pay the expenses, but need to ensure that all existing expenses prior to the switch do not create duplicate payments. So currently all data in ap_expense_report_headers has a status of INVOICED (Ready for payment) and would be picked up by the "Expense Report Export" program - how do we prevent this? Can we change the status of all these expenses to exclude them from any export permanently? From what I can