EDIT: according to another current topic, you can manually reverse direction by pressing the tractor itself in AOG. So all you have to do is press the tractor, then back up and it should do the right thing. See Grafik issue/bug - #4 by pniels
I believe AOG does make an attempt to automatically figure out whether you’re going forward or reverse. But if it ever gets it wrong, it seems that you can just press the tractor on the display to turn it the right way round.