Further to my previous enquiry on this topic, concerning JMRI operating on the main track and also the program track, I have now purchased a second NCE USB interface which I am shortly to connect up.? ?JMRI is running on a laptop and it id currently set up using one user profile for both decoder pro and panel pro.? The laptop has two USB inputs so I can connect both USB interfaces at the same time but I will have two versions of the NCE power cabs running-? the main track uses the old SB3a booster , which has s/w version 1.28d2 and the program track uses the original power cab socket which has s/w version 1.65.? ?I suspect that the jumper settings for the USB interfaces may need to be different because of the different s/w versions.? ? ?My main question is how to set up JMRI so that the loco roster can be used on both main track and program track without altering any hardware settings.? ?Do I need to create a new separate profile and share the loco roster between the two profiles ? Also, will any changes to the loco roster be applied to both profiles automatically? ?