Tony
I feel your use of the term "yard" might be getting in the way of understanding the program. I have my main classification yard all set to forward cars to their next destination. That next destination is probably another classification yard. Another train grabs the car and sets it out at a spur for loading or unloading it's custom load. Both of the class yards have no "yard" tracks They are all classification/interchange tracks. The tracks can interchange between trains or other railroads. It is in how you set it up. I have many class/inter tracks set to interchange between trains of the same railroad. I also do not tell the program what track to set the cars on. I let the yardmaster do that. The car just has a destination on it and it is up to my yardmaster to group all destinations together.
Questions? Just ask.
later
Dave
Trempealeau WI