I've already filed a ticket on this, but I think it's also worth bringing up here, as I feel this issues needs to be talked about on a wider scale. I remember in the launch day patch thread for TSW4 that Peak Forest Railway allegedly had new drivable services added that were previously AI only. However, when going into game itself, I find that no new services were actually added at all. However, that doesn't mean that mean that no changes were made to the timetable. It turns out those AI express services were changed to now stop at the two end stations, like this one at around 9:55. However, when you try to take the controls, it doesn't let you, so it is still an AI service. It's either someone forgot to make these services drivable or there are issues that are preventing these services from being drivable. But either way, this needs to be addressed as it's a shame that after all the effort to try and get more drivable services into the route, it seems like it was all for nothing in the end.
IIRC oringionally there was a walk to a railfan spot overlooking the monsal vidaduct included in the route but this was blocked off due to a miscommunication during testing. It was mentioned that ideally this would be fixed in a future update. Please could you also ask the team if this fix is included, waiting for a future update or no longer on the agenda. I really like the walk in RDA and would be lovley to have another on this route.
Late reply, but Matt was just asked about this in the charity stream. He acknowledged the issue, hopefully it gets unblocked eventually.