[Compatibility] CubicChunks mod worlds compatibility

[gianniqq]

CubicChunks is a mod that allows for almost unlimited world height and depth.
Some very unique scenarios can be achieved through this, such as what terra121 mod is showcasing: a minecraft world that's a 1 to 1 scale of the real world (1 block = 1 meter). It features terrain, biomes, trees, and roads and is based on data provided by public online datasets.
It's extremely cool and I think that chunky would really give this world a unique perspective. I'd love to be able to make a real life landscape photo and then go to minecraft "Terra" world to the respective area, load enough part of that world and then open it in chunky to make a render of that same landscape.
As of now, I tried to open the world but chunky seems to see only empty regions (pic related):

Minecraft version: 1.12.2 with forge 1.12.2-14.23.5.2838
Mods used:
CubicChunks version 1.12.2-0.1042.0-SNAPAHOT
CubicGen version 1.12.2-0.0.115.0-SNAPSHOT
Let's Encrypt Craft
MalisisCore version 1.12.2-6.5.1-SNAPSHOT
Terra 1 - 1 version 0.1
(I only used the mods required/recommended for the terra121 mod to work)

I don't know how much work is getting world data from the 3d cubicChunks way instead of the vanilla way, but it would be really nice if this could be looked up.