What do I do if sites go belly up and I'm missing objects for a route from those sites? Can I replace the kuid's in the config with something else? For example, some of the items are a dirt road by gfisher that was on uslw, and a SAL whistleboard from Eastcoasttrainz which was at The Erecting Hall but the content got yanked because it was used in N3V payware. If an asset becomes vaporware, is there a way to replace the missing item with a similar one?