Face AR Sample, Head Rotation only works within Epic's Project?

Anyone got any Face AR Sample Experience? Got everything working perfectly except I can only get head rotation within Epic’s project not my own even though it’s the exact same mesh : ) The Apple blendshapes work fine, they are fed in through the Live Link Pose Node in the Anim Graph. But it doesn’t seem to feed headPitch, Yaw, Roll. If I change those curves to standard apple ones like jawOpen the head will rotate with jawOpen.

Any help much appreciated.


Quick Update: I still haven’t totally figured this out, but I have learned that it’s not project dependent, but head rotation does seem to be dependent on Epic’s Anim BP in the Face AR Sample. If you create your own Anim BP and copy over the blueprints from theirs, it will not work! I’m so confused…