I'm running a Minecraft server (version 1.15.2), and I plan to reset the nether for the 1.16 update.
I would like to keep anything that's been built above the nether ceiling. Obviously, resetting the nether by removing the region files will destroy everything. Is there a way to selectively copy the above-ceiling content back from the original region files to the regenerated ones? I'm thinking a workflow something like this:
- Update to 1.16.
- Delete the old nether region files.
- Force-generate the nether regions within a certain area.
- Copy the data from the old region files to the new, only for Y>128.
What I'm missing is a tool to accomplish step (4). Is there such a tool?