How can i remove the mouth animation from an applied motion?

I’m working with a cartoon expressions pack that includes mouth and lips animations. I want to remove these animations and replace them with a voice-over track instead.

Could someone help me identify the keyframes controlling the mouth and lips animations so I can disable or remove them?

I’m having the same issue. Can’t seem to access the mouth keyframes in expressions.

Have a look at this manual page for the expression tracks:
https://manual.reallusion.com/iClone-8/Content/ENU/8.0/51-Animation-Timeline-Editing/Facial_Expression_Tracks.htm