In 8.2.0, the generation pattern changed and it became incompatible.
It happened in the world I was using before.
It is no longer possible to fix things that are creating strange terrain that is close to collapsing with WorldEdit etc.
To be exact, the generation pattern is different, so even if the seeds are the same, the same terrain will not be generated.
First of all, I want you to maintain compatibility and cure these terrains with WorldEdit chunk regeneration.
This is my personal priority over the 1.17 response.
The main reason is that I don't want to abandon the previous world.
In 8.2.0, the generation pattern changed and it became incompatible. It happened in the world I was using before. It is no longer possible to fix things that are creating strange terrain that is close to collapsing with WorldEdit etc. To be exact, the generation pattern is different, so even if the seeds are the same, the same terrain will not be generated.
First of all, I want you to maintain compatibility and cure these terrains with WorldEdit chunk regeneration. This is my personal priority over the 1.17 response. The main reason is that I don't want to abandon the previous world.