@Dr-Sassi I think one of the issues I'm realizing has been throwing me off is that is seems other things will be changed universally if I change them in a child take of the Main take.
For example, if I have an object in a certain position in the Main take, then I go to a child take and move that position, it is reflected in the Main take. That seems to be the case for everything besides animation.
Knowing that limitation has helped me work around it, but I think that is why I keep getting stuck on the animation issue.