[Bug]: Multiverse Incompatibility

[TelevizorQT]

I created few worlds with type "overworld" (via datapack). I added them in a mod's config file:
"dimensions": [
"minecraft:overworld",
"w:world2", ... and so on

The issue is that The Caves are generated in right way only in mc:overworld, and in new worlds just some stone is converted into a modded stone type, /locate doesn't sees an alex's caves biome there, despite it is visible on F3. (features like magnets in corresponding caves also do not appear)

Mod's mobs are spawning there, but again, the cave is the default one, but with changed stone type

I have terralith, so I copied terralith's "biome source" to new worlds (so they are same with mc:overworld changed by terralith by default) - shouldn't be any difference
I have tectonic, but it works fine in mc:overworld, so no reason to fail in other worlds (sea caves fixed with config)

Minecraft Version

1.20.1

Alex's Cave Version

2.0.2

Citadel Version

2.6.3

Game Log / Crash Report

No response

Check List

• I have removed Optifine.
• I have installed other mods (Please also provide mod list)
• This is a conflict with other mods and no issue occurred when running standalone.