I'm still getting to grips with DCC and JMRi, gradually converting the layout from analogue to digital. About 1/4 of the turnouts converted, and the same with block detection. And 2 signals out of the many that I'm going to install. I do save quite often and keep the older files for a month.? The saved files in general are stable, but occasionally they don't save properly, which is why I keep the older ones. Merry Christmas, and I hope you'll have the time to run a few Santa Specials next week.
Chris.
SwissChris