Variables get swapped around sometimes in prefabs for some reason.
Prefabs are not getting properly reverted when attempted. Nothing happens when you try use Revert All.
My workaround is to delete existing prefabs in the scene, and place new ones from project folder.
Another workaround is to Edit the parent prefab, delete the actions with wrong values, add new action and insert desired variable again. This updates the prefabs in the scene to correct values.
The Revert bug seems to occur when you Edit prefab FSM instance. After doing so there no way to revert back to default values.
I can't explain how the variables are getting switched around though, it happens when I'm not paying attention. Suddenly action values are containing incorrect variables, as seen in the video.
In the attachment you'll find 2 pictures showing which variable values are correct, and which are wrong.
Video:
https://www.dropbox.com/s/654l8hei12w09kd/prefab_issue_playmaker.mp4?dl=0