Hide fully invoiced GRNs when Editing Disputed Invoice

When recording a POP invoice with Three-Way-Match GRNs for the line are shown in the bottom box; GRNs that have been fully matched to invoices are not shown in this box. When Editing Matched Invoice through Disputed Invoice, the behaviour is different and fully matched GRNs populate the list. This causes confusion, especially on call off orders with a large number of previously matched GRNs. Could the behaviour of Editing Disputed Invoice be the same as record invoice?