That is pretty weird but thanks a lot for testing and providing a solution! I wasted decades (and hours rl time) trying to make it work. 🙂
I never used grouping before, will have to check that. Maybe it would be easier to have only 1 station but I preferred to have separate drop and pickup stations so the loading queue doesn’t block the incoming raw mats. As it is trucks block themselves on main road sometimes, some micromanagement is needed (seperate road pieces) to prevent it, and then cargo has to walk more. Ah well. I am hoping this will improve a little bit, but then apparently I still have a lot to learn as well.
Thanks again!