Problem with NCE decoder

[torikoos]

Hi 'Steamtrains' / Gus , I think you are a little confused there. If indeed you have no separation between programming track and the rest of layout, then programming in a 'programming track mode' , or what ever your system calls it, will program all locos. Programming on the Main (POM) will usually only program the addressed loco with most systems. (there might be exceptions) . Also using software like JMRI Decoder pro, it is very easy to accidentally send 'programming track' commands over the main, so you have to set it up properly, otherwise all locos will be affected.

Koos