How can I clone an old invoice or PO to create a new one without having to recreate from scratch?

Many invoices & POs are repeats. How can I simply copy (clone) an old one then edit to create the new one? There may be a lot of detail included on an invoice or PO that needs to be included. It is not productive to have to re-enter all that data for each repeat order. An alternative would be to have two invoice windows open at the same time to cut & paste but QB doesn't allow this.