RWK, if you want to substitute for missing assets, you cannot do it in the config.txt file, because for routes, the kuid list in the config.txt file comes FROM the route, not the other way around. You have to edit the route in surveyor, find the orange wire boxes representing the missing assets, and manually replace them in the route, then delete all missing assets and save as your own route. This method does not work for textures, you just have to re-texture areas that are missing textures. One alternative is to clone the substitute and assign it the kuid of the missing asset. Then the route will pick it up as if it were the original. Let me know if you need the steps for the cloning method. I have used it a lot to replace pofig trees and billboard trees with more modern trees.