So here goes my grain of salt: I will call it asset instead of content in general. Let's say I import into TANE my route, and it works perfectly in TS12. But in TANE it shows plenty of faulty, missing dependencies, and all. More precisely let's say there is a particular asset that is vital, such as an interactive station with adjustable passenger height for example. I would expect, that if this asset is not supported, another should be made to replace it, so the overall functionality of the route is not compromised. Am I asking for too much? maybe. But take a look at another stance (Possibly this has been included in TANE): Eons ago, I had a rule that would make rain or snow on a section of the route. It was triggered by a train going by a trackmark. It was very neat. One day, a new version of TS came along and it would not work anymore. And there was nothing to replace this effect! Bottom line is that for the sake of progress, we should not lose features we love having, in exchange for things we may not care so much. Hope no one get's offended by this.