Cycle Not Showing

Your situation, should you accept it, is solving my cycle problem. I have a Photoshop character whose head turns from Profile Left to Frontal View. This is done through key frame animation not Body Tracking. I had it working fine until I decided to tweak the motion by adding a 2/3 left view of the head to smooth out the action. Then it stoppped working. D'oh!

The head turn is similar to the left hand cycle. It is grouped with a default layer and the cycle group. It is set up as a Swap Set with the Default Layer marked as "Default" and balance of the cycle group marked with "Latch" box checked. My cycles Behavior is "Hold On Last layer" and "Stop Immediately".

The only difference is that the last layer, the Frontal View, is animated. This has been put into a folder with mouths, eyes, nose, etc. The Frontal View is the only frame/layer in the cycle tagged as "Head" and "Frontal Head" on the mannequin at the right in Rig mode because it is the only layer being animated. Everything appears to be labeled/coded correctly. Layers hidden as necessary. I'm surmising my hierarchy is incorrect.

Any help would be much appreciated.

Images attached below; puppet "Cab Driver" along with video test (proving it was working!) uploaded to Creative Cloud Documents folder.