Animation posing

Hi, I need to made an animation with Persona, I tried to modify an existing animation with bone manipulation mode in Persona (Bone Manipulation Mode | Unreal Engine Documentation) but then I discovered that bone manipulation doesn’t allow to edit an animation but only to change the pose in the preview. Is there a way to do something like changing animation pose permanently only on the animation I want?

It’s unlikely that nobody knows how to edit an animation,c’mon guys I really need this