When upgrade the old world, the existing building is seriously damaged, and the new terrain occurs on the existing terrain.

When upgrade the old world, the existing building is seriously damaged, and the new terrain occurs on the existing terrain.

 

Files description:

2021-10-28_22.50.04.png - old world (1.10.2 -> 1.17.1)

2021-10-28_22.28.45.png - 1.10.2 -> 1.17.1 -> 21w43a

2021-10-28_22.28.08.png - terrain comparison

2021-11-27_11.47.40.png - 1.10.2 -> 1.18-pre8, rc2, rc3

(NOMALLY WORKED IN 1.18-pre7)