When a Purchase Invoice is used and Get Receipt Lines is used as a separate billing document, the Posting of the Purchase Invoice will not result in a deletion of the related Purchase Order - even if the PO is fully Received and Invoiced for all lines. This needs to be changed. Why make the link available if it does not complete the cycle.?

We need to use purchase invoices as we do not want the purchase order to go back through the workflow process for adding freight and tax that the purchaser would not have at the time of entry.