sounds like a reset of setup, I’ve noticed similar in that the scroll PIS resets on the class 150 under same conditions
Always set your path before doing anything. Some locos will trigger an initialisation script as soon as the service becomes active (by having a path). Only then press Banking Comm and setup your loco.
I noticed that especially with American locos. For the time being, before you set a freeroam path, remember to set the reverser to off (or neutral, depending on loco).