Hi Dan. From Panel Pro, go into Operations, then Locomotives. I imported these mostly from Decoder Pro, but have been adding others for some time. If I select an existing? loco with type 'steam' and change it to diesel, other locos are having their type changed at the same time! It's randomly changing other locos, fairly consistently. I'm running simulator so no loconet connection, and this happens if I load my panel or work purely in ops.