I've just picked up on this thread as I am having similar issues to the other posts.
I am very new to the extension and the attached file is my first attempt at an animation.
I created the file and animation and all was ok, mp4 file exported great.
2 days later I opened the file again, went straight to the animation and played it, but now all the rotation and stop start points have changed.
I've since created another file with far more movements and cameras, but again the following day when I open the file all the rotations and movements are now wrong.
In the attached screen shots I have tried to show the before and after to help understand the issue
Is there something I am not doing right when closing the file down?
Is it important to exit the extension before closing SketchUp
Is there anything I can do to recover a days work 
SketchUp Version 22.0.354
Fredo6 Animator Ver 3.8a
Fredo6 LibFredo6 Ver 13.7b
Thanks
Martin
