You have to isolate your tweaks.
That is at some point where hand starts moving toward belly, select Motion Layer on the timeline and click + or A to add the key.
Then move play-head past the hand/belly intersection and add another key.
Now you have an isolated part of the clip at the timeline between 2 keys where you may tweak the hand and it would not affect the rest of the clip.
Edited
2 Years Ago by
4u2ges