MagmaCore/com.magmaguy.magmacore.util/WorldBlueprint/needsConversion

needsConversion

public boolean needsConversion(boolean modernServer, int serverDataVersion)

Whether this server rebuilds the blueprint's storage for every copy it loads: Paper 26.1+ imports any world with its own level data into its dimension storage, and every server upgrades level data an older version saved. Terrain-only blueprints have no level data to convert.