One thing I've noticed with the Jeep is that after a mission the waypoints still stands and you can not remove them as you can mission in progress. I even had a Jeep that was destroyed that still had waypoints. When I deleted the waypoints in the newwaypoints table the destroyed icon was still there...
I just wanted to say thank you to Chamel and Emil, this guide helped me out loads and I am now able to explore the capabilities of SEOW much better than before.