Converting the last keyframe to have a Spatial Interpolation of “Linear” did the trick. Thank you.
I would like to be able to understand this concept more fully. It’s one of those deals where I feel like I kind of “get it,” but I wouldn’t be able to articulate it, I don’t think. Wondering what was unusual about this circumstance where I ran into a problem. I’ve been using AE for over 10 years, and I can’t say I’ve ever run into this problem before. I did go in and mess with keyframe interpolation settings at one point in an effort to fix this, but I don’t think I did before I noticed the “boomerang” action. Anyone care to explain why I WOULD NOT want to change the default setting for Spatial Interpolation as suggested by djeddy76?