I am having this issue where when I import terrain the vehicle ignores it, I only have 1 terrain as I know that having 2 can cause issues. I have saved and reset game and I still can't get vehicle to collide with it. There is just a invisible flat collision plane.
Please make triple sure you have no other 'terrains' in your level. Also, collisions gets updated only when you close the editor. Update your level here eventually, so we can have a look at it directly.
Yes I only have 1 I will try opening it up today, for some reason for a full reset of beamng to take place I have to restart my computer.
Yes I don't have a real solution rather then just recreating the terrain, I have a feeling it because the file locations were not setup in the .mis I was a little lazy and just wanted to get to work on the map.