Manage Project cost doesn't show the approval status of an invoice in Payables

In the Manage Cost inquiry, I'm not seeing how invoices from Payables that are accounted in my project cost are not approved and therefore an easy way to hold the invoice from billing. Many customers seem to have to pull the manage project cost extract, then pull an invoice status report from Payables and then individually put the events on hold. I know of one way to prevent this is to not account for payables invoices until invoice is approved but that slows down the payment process to our suppliers. Does anyone know