It can be done regardless of the path mode.The only drawback to reverse action is that it can only be done in straight line mode
Reverse basically prevents the mission to end, so you can replay it easily, without having to make sure it doesn't hit the end (if it does, it will just hover and you can replay in reverse with the joysticks).But how do I reverse-finish a mission? I assume it means that the mission starts at the last waypoint?