Load edit session do some work and save. ctrl+F2 into driver and run session. So far so good, flick to surveyor alter something and go back to driver, problem solved. This is where I am confused because if you want to save the alteration to the route or session when do you do it? Do you go back to surveyor first and save, if so will the consists be in the new location or as they where when you loaded the route? or click exit driver and don't save the driver session? I seem to find myself back at the session screen and the alteration is lost.