How to remap SceneTexture in PostProcess to CurveAtlas

Hello all,

I am working on a project which uses Curve atlas’s to remap the rendered scene to a new colour range.
I am using lerp with alpha textures to render the scene in multiple different ranges at once.

I am running into an issue however, that the shadows/0 brightness of my PostProcess0 SceneTexture render still are in the black range, despite the 0 curve time of the curve being very visibly not black.

Here you can see the shadows of this scene are rendered in 0,0,0

This is one of the curves pictured in the image above, as you can see, 0 curve time is far from black.

And finally, here is the part in my post process shader in which this is happening

Let me know if anything is unclear, help would be greatly appreciated.

Thank you!!

buuuuuuuuuump! need help with this!