I have 3000 waypoints on my unit. I am at 2480 (ish). In the process of deleting unused/unnecessary waypoints to make some room. When I make a new waypoint now, it will come up as 2481, no regard to the couple hundred previous waypoints I have deleted. How does that work? When I finally get to 3000, will the next mark be the lowest number of previously deleted and increment from there?