Example: I just planned a route by clicking overlay waypoints loaded from GPX before (mountain passes), so each waypoint has a name ( ):
But now I choose diferent start and end by long tap on map → “Set start / end”:
As you can see start and end still have the names of the mountain passes in 1st version of route - this is confusing, therefore I propose to delete the waypoint name of start / end if “Set as start / end” is used.