Hot Container - Wood

[HC1Gunner]

I can't find a trailer that holds the open wood container, and there are no directions as to how the container loads onto the trailer. I drove by both ends and sides of the trailer, and no trigger showed in the F1 menu. I have two of the containers full of wood, I pushed them over to the sawmill's sales trigger area, tried both the "I" and "R", but wood remains in container.
The only trailer showing is way shorter than the 40' or 45' wood container. Was this mod created to work on just a certain map?

Authur:
"The 40-foot container can be found under trailers - there is also a suitable trailer for it. The swap body is located under the swap bodies of the cargo system".