Procedural dynamic Automatic Landscape Material Set 1 Alpine edition

Can anybody tell me how to get the package into an existing project without losing all of the connections to the references and textures? I have read through the explanations above and it seems like a lot of work/some of it I don’t understand, for something that should work automatically. I am at the end of my tether and quite fed-up that this is not working properly. Help would be greatly appreciated :-).