I have to be doing something wrong here. I started building a new terrain, everything looked pretty good, had a few layers setup, lighting and stuff. I save it, come back a few hours later to keep working. I open the world editor, and select file/ load world, and select my map. All of the things I created earlier that were in my hierarchy are now gone. They are still in the resource browser, but I can't add them back to the hierarchy. My viewport is just solid white, and there is no gizmo in the top right corner.
I've restarted this map 3 times now. I have to be doing something wrong. Why do I keep losing my progress?