Transfer Drive Issue

[CQ59]

I created Transfer Drive loops for completing missions. With the exception of both Skid Loaders, and the Forklift, any other vehicle that has a load on the forks of the forklift apparatus will freeze and not run loop.

When I drop the load of a frozen vehicle the vehicle will run the loop.

I can see no other Courseplay mode that will work in accomplishing missions. I've tried the loading all cargo on hay wagon but found with the Felsbunn map that method is not a practical to use.