Persona - Save Keyframe?!

How do you modify a keyframe in persona and have it stay where you modified it? When I make a modification to a keyframe for the root bone and then move to another frame it changes the previous one. Any help is appreciated.


Side note:

The interface for many of ue’s tools is not intuitive to people who are comfortable with similar 3dcc tools and the documentation is horrendous (read frustrating).

I see a lot of opportunities for ue4 positions and I’m wondering if it’s because the tool turns so many people away due to poor resources for developers who work in much easier (and less powerful tools).