I was wondering if anyone knew what a _BDE texture file is used for and how to apply it properly? I've found it in a few models in Dead by Daylight, I'll put it along with the other texture files below to give a bit of context in the hopes that anyone knows what it's meant to be used for.
I'm unsure what the exact name for this texture is so I just call it the main one

it ends with _BC

This is just the normals one, ends with _N

Here's the Occlusion, Roughness and Metalic, ends with _ORM

And the final one in question, ending with _BDE

I think the blue channel is meant to be emission as when I applied it to the BSDF Emission it seemed to fit correctly into the "space" left in the _BC. As you can probably tell I'm pretty new to blender and ue viewer, just hoping to figure out what the red and green channel are to be used for in this
Here's how the rendered model looks like with all the textures applied, including the blue channel into emission but with the red and green left out.

Thank you in advance for any help <3