@CornerHardMC It's not about mountains or caves.
The structure itself becomes a completely different world!
Is this intended?
Why is it like this? Do all Bedrock users have to give up Old World?
@CornerHardMC 1.17.40 beta, * the same Seeds!
1. The world created when the world was created with the default setting
2. when the experimental game Play-Cave&Cliff was applied
Even though the above two worlds applied the same SEEDS, they become completely different worlds!!
Yes of course. New world height won't affect the ability to play old worlds (and we will explore ways to make the conversion to the new world height nice for old worlds)