Ore Generation doesn't work in biome created with datapack

[TqLxQuanZ]

{
  "oreConfig": [
    {
      "ore": "immersiveengineering:deepslate_ore_lead",
      "fillers": ["minecraft:deepslate"],
      "distribution": "UNIFORM",
      "minY": -54,
      "maxY": 380,
      "maxVeinSize": 50,
      "spawnRate": 20.0,
      "discardChanceOnAirExposure": 0.0,
      "biomeFilters": {
        "biomeBlacklist": [],
        "biomeWhitelist": ["deceasedcraft:undiscovered"]
      },
      "replace": true
    }
  ]
}

So I have this script, and a newly created biome from datapack, the world and the biome generates well, but it seems like the biome whitelist doesn't detect the datapack biome, did I miss something here? The biome is generated full of deepslate too.

[TqLxQuanZ]

Nevermind, it actually works for some reason, closing this.