Blackmercedes-
The transmission adaptations are partially controlled by what the engine adaptations are reading. They work together hand in hand, and as the engine adaptations are changing because of faulty AMM readings, the trans adaptations will change to a point as well to compensate for what it believes is going on with the vehicle. When the engine adaptations go back to default and the trans adaptations do not, they may be in a place where they don't agree with one another, so to speak. This can cause shifting behavior that is not what the customer is used to feeling when they drive their car.