I messed something using MultiVerse, and now my spawn looks like this. As you might be able to see Minecraft thinks that the world is at bedrock, so it spawns those little particles, but really its just on a plate map. How would I fix this. Also, I'm trying to create a nether for a world named 'pvp' but importing doesn't fix it.
Update: MultiVerse thinks its flatlands, but Minecraft itself thinks its just a normal map. Beast I tried that but I think the level.dat file still thinks its a normal map. So I'm not sure how to fix it.