It seems to me that after running Freight Hauler from Dusk to Dawn that the AI trains do not reset and continue the following day. This is no different then it has been for Free Roam since its inception. This bug may be considered a feature if you want to run FH without AI trains to content with. It is also another means to enter into Free Roam with static trains already dispersed on the route. Just start FH one evening and continue into the next day. Whenever you complete FH you might be able to start FR from there. After 12hours and 100 miles traveled I'm still working on my deliverers, 19/39. I think the second half will go quicker.