Yes, and what if people used that content in routes? Then new downloaders will have missing crossing signals that will have to be manually replaced because the orignals are no longer available, especially the payware ones. I think the few freeware ones could be downloaded through Wayback archive. There are so many defunct Trainz sites, like TPR, Control Point Simulations (but some of the content is on another site but not the routes which I have), The Backshops (some content at Approach Medium), and more. I had so much trouble finding assets for routes I downloaded because the route creators used stuff from now defunct sites and some of the content isn't even downloadable on Wayback. Then what do you do? How do you replace unknown kuid's when you don't even know what kind of asset they are, all you know is the author's name and the kuid number?