I was setting up a mission with a tanker and once I placed the KC and it didn't work I would have to delete it and start again. It is almost like once the thing is in there it will not change. I got them all working, KC-135, KC-130, and the S-3, with a nice mellow race track orbit between two waypoints at 100nm apart. The S-3 has baby sea legs and RTBs early. In closing: I make the 1st WP with all the info. (Orbit, TACAN, Freqs) The next waypoint is out there a ways. If you have them take off leave WP 0 alone and start with WP1. Seems to work for me.