Can't combine server LODs

I'm trying to work on a server wide project to generate LODs for a server wherein players can send in their LODs from their area in order to combine the LODs into one big file.

I can't seem to get this working in any configuration. Combining 2 worlds from single player using the import command works perfectly.

What I've tried is going into singleplayer, generating a superflat world with 0 layers so that the world is empty, then copying the contents of the LODs from the server into voxy folder that the world generates. This actually works and the LODs appear successfully in the single player world. The issue starts when trying to import those LODs into another world (whether it's single player or server) when i go to import the LODs I see progress appear and it seems like its working but the chunks never actually show up.

I'm really hoping someone can give me insight into how I can combine these server chunks. I'm not sure if import zip would work as i'm pretty sure all the import commands work off the assumption that you're importing a singleplayer world that contains voxy data.

No source files or tests are named. Start by reproducing the import command with LOD data copied from a server into a single-player world, then compare that with the working single-player world-combination case. Done means identifying why imported server chunks do not appear and verifying the behavior with both single-player and server LOD data.