Allow deleting ignored invoices and stock moves
When processing an exception on an order, we can ignore the exception and so no more related lines/documents will be recreated. But in case of mistake it is not possible to cancel the ignore. I think it is more user friendly to allow users to correct their mistakes.
For that I propose to allow Sale and Purchase administrator to edit the "ignored" Many2Many
to remove mistakes.
I think it is good enough to expect that the administrator will trigger the "Process" button to restore a coherent state.