Hey some trick!
You can right click on blueprint and convert them to Static Meshes!
Or long time ago i made a plugin which searching all static mesh component in a blueprint and creating real staticmeshes from them: Simple Static Mesh converter (BP - static mesh component to real static mesh) - Community Content, Tools and Tutorials - Unreal Engine Forums
Give it a try… im not updating this “small” plugin since 1 year, but should work 