Now that I'm home, rested and fed I can elaborate a little further.
When you update an LM with the accessory program, the LM ceases to be a Locomotive module and becomes an Accessory module. It will disappear from the locomotive list and appear in the Accessories list. You can then copy accessory projects to it (for instance you could put one in a caboose or passenger car to control the lighting etc). You cannot have both the Locomotive program and the Accessory program loaded into the LM at once; the update screen gives you the choice of which one to load.
If you wish to return the LM to a Locomotive module, you only have to update the LM again with the Locomotive program. I imagine that if you updated an existing LM that you had setup how you liked that you lost those settings when the accessory program was loaded so you will most likely have to re-setup all your controls again.
Dean , for the LM that is still (from what I gather from your post) in the loco list, compare the HC screen with the screenshots below. if it is indeed loaded with the accessory program but still shows in the loco list then it sounds like the HC is confused to what it actually is. You should still be able to update the LM back to the Locomotive program.
LM Control Screen.
Take note of the text at the top: Control Locomotive or Control Accessory.
LM Information screen.
Take note SW number and revision. The text at the top says Locomotive Information for both the Locomotive and Accessory programs for some reason.
- Tim