Marking a Purchase Order or Sales Order Complete instead of having to cancel it to clear from Live orders Merged

I have goods that need to returned for rework which have been invoiced for. I won't get a credit note or new invoice for this, as the original invoices covers the costs. The option I have to close a return at the moment is to cancel the actual return, which seems to be affecting the summary of returned goods. Are we able to have an option where we can tick the return as 'completed', so that Sage 200 takes it out of live orders, but we can still see the returns on the Purchase Orders screen if we need to refer back. At the moment only live ones show, and what happens to the returns that have been cancelled I have no idea. I'm sure there is an audit report you can pull, but this wastes time locating and creating the report.