I created my model, saved both the .skp and .osm files, and then closed Sketchup. Opening up Sketchup, and I load the .skp, my model is there. But I get the dialog box telling me Sketchup is going to remove the OS content and to load my .associated .osm file. When I do this my model is a wireframe model. How do I fix this? I'm using Sketchup 2018 & OpenStudio 2.7.0.