I see some amazing coasters with beautiful buildings and scenery that people have created. I tried doing this in sandbox mode but my coaster is separate from the building and scenery that I created around it (part of my coaster goes through the building). When I try to save as a blueprint, I have to do it as two separate blueprints; the coaster by itself, and then the building with scenery. How do I combine them into one blueprint? Thanks for any help as this has been driving me crazy.