Keep the line focus in the Service Group Maintenance Window

Currently when you are working on your op codes via the service group maintenance window, if you you open up an op code or create a new one and open to input details - when you click the back button to return to the service group maintenance list, it automatically selects the op code currently at the top of the list. Would like for this not to happen, and instead when backing out of the service group details window, would like the currently selected service group to remain selected rather than kicking them to the top of the list.