Perhaps this might help.
1. In the Timeline, click the Face tab & Collect Clip tab.
2. In the Collect Clip track mark the range for the speech.
3. Right Click>Export Facial Motion.
4. Save it for the character.
.
To use the clip.
1. Click the character.
2. Click Animation>Custom>Face.
3. Double click the saved motion.
4. In the Timeline, click Face>Voice Clip.
5. Delete the voice clip in the track.
YouTube Tutorials Here