Are there limitations on changing from one loco to another in free roam? I seem to be having inconsistancies with this.
As an example (I just chose this as one example; I've had it else where, so I know it's not the route or scenario.)
Last night I was playing the freem roam at Kleeburn(?) on the BN bighorn. I was driving the 2-unit lashup of SD40's, assembling and loading three individual strings of coal hoppers into one train. On the siding across from the yard tracks is another SD40. When I started out, I could switch to this other unit with no problems. I did this several times, jumping back and forth from one train to the other and doing switching operations with both.
I spent a fair amount of time loading coal into the assembled unit coal train I'd created. Finally I planned to add the single SD40 to the rear of the train as a helper, but I couldn't access it anymore.
Anybody have any idea why not? I've seen this in several other situations as well. At first I can switch trains; then I can't.
