They did, yes. However, it's not entirely lost...you can obtain it off the Trainz Store for 5.99. Same with the SD40-2B
I also remember from way back, they also had ex-BN and ATSF patch units, along with a few leasers, but those are also gone. Ah, well. These are fairly easy to reskin, however.
Hope that helps.
-Chiro