DAN 96320 still locked after task completion

My friend unlocked the DAN 96320 through the task "lost in the woods" on coop and gave me the truck however I ended up selling it to the store and the game still registers that I haven't completed the task despite it saying other wise. In the store it tells me to explore world to unlock the truck. The truck and the mission aren't available on the map either.

I have encountered the same problem, will it get fixed? Is there a workaround? #PS4version