freeze automatic reordering button needed urgently

Very frequently we encounter the situation that complex line ordering has been manually fixed and then someone notices that a line needs to be added or deleted and all the reordering work needs to be redone. The best solution would be a button on top of the segmentation panel (because here is what causes the reordering) that can toggle the ability to automatically reorder. This should be written into the dbase for the relative part and changed only if the button is hit another time to untoggle. It is really important to keep the workflow straight. Sometimes time for manual reordering correction can be longer than for all other steps.