I used minecraft 1.8 test was not successful.
I try this method , new the World, then replace region.
After entering MCServer, maps are a lot of holes. Right should be completely flat map.
WorldLoader(world): Block entity mismatch: block type mobspawner (52), type "MobSpawner", at {-131, 12, -22}; the entity will be lost.
[13:25:22] Chunk generator performance: 44.06 ch/s (89 ch total)
[13:25:23] Chunk generator performance: 44.94 ch/s (182 ch total)
[13:25:25] Chunk generator performance: 47.45 ch/s (288 ch total)
I try this method , new the World, then replace region.
After entering MCServer, maps are a lot of holes. Right should be completely flat map.
WorldLoader(world): Block entity mismatch: block type mobspawner (52), type "MobSpawner", at {-131, 12, -22}; the entity will be lost.
[13:25:22] Chunk generator performance: 44.06 ch/s (89 ch total)
[13:25:23] Chunk generator performance: 44.94 ch/s (182 ch total)
[13:25:25] Chunk generator performance: 47.45 ch/s (288 ch total)