I just started all three MUs, two on one track and one on another. They actually started correctly, by the way, which only happens half the time. I hit the read button and here is what happened. All the MUs went to the inactive list, all the individual engines came up active. All the smoke came on, all the ACC and DEC went to default 4 and 2, sounds all increased and crew talk started as soon as the MUs were brought active. This was the second time I tried it. The first time everything happened right after I hit the read button, without bringing them up.
As far as the test track is concerned, I usually just take engines off the layout or park them on a dead siding, and use the layout track for adding engines. I only have 6 diesels and 1 steam, so usually not a problem.
