This bug exists since the introduction of the loiter waypoint. It makes the VTOL Gunship unusable with an AI pilot and maybe also affects Drones:   The  Loiter Waypoint has a setting for height, that sets height above sea level for the loiter. This works however only in the Eden Editor preview. As soon as you save/load the mission, the waypoint height value is reset to -1 and therefore disabled. The aircraft will then fly very low and copy the ground. All the scripting commands to change flightheight do not work for loiter action. This makes it impossible to use the gunship without a human pilot!   I think this bug might also be related to UAVs copying ground while loitering, when being comamnded from the UAV terminal: While the UAV accepts the height you set for it in the UAV terminal, it still copies terrain even when set to 200 or 500 meters, where copying terrain is very annoying, becaue it shakes up the camera so much.   I noticed, that there is also no script command for setting the loiter waypoint height, while there are commands to set loiter direction and loiter radius. I suspect, that this missing command has soemthing to do with the problem of the height not correctly registering when setting it in eden waypoint options.   If you know a workaround to get a loiter with fixed height ASL, please let me know! I've again wasted countless hours to get this working, but without success... Thanks.