As delivered the Reset Switch may be set incorrectly.

The BLT Cab Forwards shipped last week. Some users have reported problems with programming and also loco returning to default address 3, when track power is re-cycled.

Ogden learned the hard way what the problem was:

I have cured my problem of the BLI AC4 restarting with return to default settings. I programmed in a four digit address, 4100, but it always defaulted to ADD 3 after a power off shutdown. As delivered, the switch in the tender was set to the rear. This agrees with the information sheet supplied with the unit. However, when I called BLI Tech Support, they said that the switch should be in the forward position. ???? Setting the switch to the forward position cured the problem.

So, if someone else has this problem, they might try the switch in both positions.