Is there a way to apply a transformation across preexisting keyframes? I'm working on a modification of a preexisting weapon model's animations for a game mod, and need to make adjustments to the animations for the swapped model. What I essentially need to do is move one bone and then apply that transformation throughout all of the keyframes in the animation.





The obvious way to go about this would be to go through every key frame in every animation and type out the transforms with precise values, but that's incredibly time consuming and seems a likely way for me to make mistakes.
Is there a way that I can perform one transformation, and then apply it to every other keyframe?

On a related note, is there a way I can align the camera to a bone's particular axis? If there's no way to perform a mass transform like this, it would at least eliminate a lot of potential for error by doing transformations by the view's orientation with consistent accuracy from frame to frame.
Keyframes can be created, read, updated and deleted.
Descriptions can be accurate or inaccurate.
From your description it leads the reader to believe you can delete all the keyframes for one particular bone and then create a single new keyframe or transformation.  If there are no keyframes the current transformation is the one that dominates.