Minecraft 1.8–26.x
worldmanagement.yml
Default Config File
worldSeed: "none"
worldSeed: "none" selects a random seed for a new map. A configured seed is reused for generation and skips random-seed land validation. Changing the seed does not replace an already generated map.
The plugin also saves ocean-conversion metadata in this file after generating converted terrain. Keep that metadata, including oceanFallback.terrainVersion, unchanged so newly explored chunks use the same terrain style after a restart. Fully regenerate the map to adopt new terrain-generation behavior. See Custom Worlds.