I have been wasting my time trying to get a portal to drop a consist, return that engine and get a local engine to pickup the consist. The latest test produced a new miracle. The arriving train's engine dropped the consist at the trackmark and moved on. Another train, waiting for the first engine to clear the tracks now proceeds to approach the consist to Couple At Trackmark. BUT, the darn consist began to move toward the oncoming engine under its own "special N3V power"!!! It is repeatable. I will report it, which will take more of my time filling out all of the forms.