This statement appears in a Dove-Tail Live article: "If you own Train Sim World: Ruhr Sieg Nord, its DB BR 185.2 in DB Traffic Red livery, and the DB BR 143, can swap interchangeably with trains in Main-Spessart Bahn’s Service Mode, adding to the variety available on both freight and passenger trains. In contrast, the DB BR 185.2 Railion livery from Main-Spessart Bahn will also become available to drive on Ruhr Sieg Nord." This happens automatically if one has purchased both routes. No new scenarios are available, but the engines can be driven in service mode.
