If a Free Agent Doc/Engi moves from one group to another, does he get to take his G:Servant with him? Or would one need to also spend a Command token on the bot? Similarly, how many tokens do you need to move a non-Free Agent Doc and his bot to another group? The question arose due to the "both of them count as only one trooper" part in the third bullet of G:Servant.
G:Servant and Doctor/engineer count as only one trooper, as you said So when you change the doctor/enginner from one group to anther (with free agent or command token), you also change the ghost servant group