Key Frame Problem

Hey, I justed wanted to know how to move animation key frames from one Action Data Block to another, it would be really helpful if someone could to tell me how to do that. For example. I have walk cycle data block and I want to copy a key frame into my running data block for a smooth transition. How would I do that?

I was trying to find this out a long time ago but unfortunately couldn’t find anything, don’t know if they added this feature in any of the newer versions.