if (newWorldFile.exists()) {
Logging.fine("Succeeded at copying stuff");
if (this.addWorld(newName, environment, null, null, null, generator, useSpawnAdjust)) {
// getMVWorld() doesn't actually return an MVWorld
Logging.fine("Succeeded at importing stuff");
MVWorld newWorld = (MVWorld) this.getMVWorld(newName);
MVWorld oldWorld = (MVWorld) this.getMVWorld(oldName);
newWorld.copyValues(oldWorld);
try {
// don't keep the alias the same -- that would be useless
newWorld.setPropertyValue("alias", newName);
} catch (PropertyDoesNotExistException e) {