I am also confused but my understanding is that older routes are not compatible and that they have to be re bought as they are updated and are made available. Bit of a scam really. I'm also back to Train Sims after many years with TSW3 and am a bit underwhelmed to be honest. I can't see it selling well enough to attract many third party devs so I expect it to remain very limited. PS I'm also very sad to read that UKTS is closing.