Where are the facial pose assets for metahumans being driven from?

Hi,

I’ve been looking at how the facial animations for Metahumans work and from what I can tell, the sliders on the face board are driving curves on the skeleton that ultimately end up driving pose assets to form the facial animations.

However, I can’t find where the curves to pose assets step is occurring.

The post process animation blueprint for metahuman faces, which is where I thought it would take place, is basically empty.

Does anyone know where this missing step is and how it works on metahumans?

Thanks

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