MCA files from one world not pasting to another

[Tempesss]

Describe the bug
A clear and concise description of what the bug is.
The bug that i am having is: When I try and paste chunks from one saved world to another, chunks will paste AROUND selected chunks without pasting in specific chunks no matter how many times I try to paste within those chunks even when I have reset them manually.

To Reproduce
Steps to reproduce the behavior:

1. Go to a world file you want to copy chunks from
2. copy specific chunks
3. attempt to paste them into another world

A clear and concise description of what you expected to happen.
what i expected to happen was for the chunks to all paste correctly however what happened is only about 40% of the chunks pasted correctly while the rest of them didn't paste at all.

Screenshots and other files

the left world is the world I am trying to paste over with the highlighted selection being the missing parts of the other world. the right world is the world I am trying to paste into with the missing selection.

Relevant world files ('.mca'-files) and selection files ('.csv'-files) must be bundled in a '.zip'-archive.

mcaselector-20250213-123728-1.log

Environment (please complete the following information):

• OS: windows 11
• Java version: 1.21
• Version of MCA Selector 2.4.2

Additional context
i use waystones and chunk loaders but nothing else should be relevant

[IAmNotLiable]

I have the same issue.

[Ziphyrien]

me too!

[Querz]

I am not able to reproduce this by pasting the 1.19 debug world into a fresh 1.19 normal world. Do you mind uploading your source world ("Scicrafts Main Storage 1.19") or providing the original download link (if it exists)?