I create a lashup with the locomotives sitting on a track powered by the Fixed 1 channel of TIU 1 (I have two TIUs).
When the layout is powered off, sits for a day, and is powered back on, if the locomotive lashup is still sitting on A track powered by Fixed 1 of TIU 1, all is okay. It retains it's lashup and settings.
If it is sitting on a track powered by Fixed 2, TIU 1, the settings are lost and I have to create the lashup all over again. Batteries are fully charged in both locomotives. Turn it off, physically move the locomotives back to a track powered by Fixed 1, and it acts normally like the power was never turned off.
I repleted the exact sequence with a separate lashup and the same thing happened.
What the heck is going on?