Update 2.06 added loading cargo into trucks.
I did tests with this, it worked fine at me with all NATO trucks, but it completely doesn't work with FIA, CSAT, LDF, Sindycat, IDAP trucks!
It looks like this won't work with any other truck other than NATO
Please fix this so it works the same for everyone truck of any factions
Video example - https://www.youtube.com/watch?v=wYGsGLhXuiE