I had the situation that I was bringing planks to a bridge to repair it. On the way there I had an accident with the trailer. It fell on the side, the load just moved a bit, but was still on the trailer. I recovered the trailer and drove to the objective, but couldnt finish, because it said there are no planks on the truck.
So I got a crane for the truck and tried to get the plank on the truck, but I couldnt lift the planks outside.
So I threw the trailer on the side to recover the planks.
Then I had the planks on my truck, drove there, but it still said, that I have no materials on the truck and cant end the mission. Even lifting out the materials didnt help
So either there is a problem with ending the mission generally or the system has a problem with materials they fell off the trailer/truck and getting recovered