I have experienced this changing door control to automatic on multiple occasions but this time it is stopping me from proceeding with the timetable run. I initially start a timetable run (this occurs on multiple routes with multiple trains running), sometimes occurring after changing to a different service but has occurred after changing ends on the Bakerloo line. The latest occurrence just happened on Hamburg - Lubeck after changing from a BR101 to a BR112 hauling the double deck push-pull coaches. After departing and heading to the first station I found out the door control has changed to automatic as if it was an AI service again, however the doors closed before the loading circle had finished and did each time I tried to reopen them so I was unable to complete the service. How do I change it back from automatic door control to manual?