Earlier I attempted to append two actions to this .blend file. The appended "Walk" and "Run" actions weren't animating properly, and the bones had to be rotated along the Y axis with
R in order for them to work.
However, this broke the existing "Idle" action, which was built for the armature before it had its bones rotated. I've created a new .blend file to illustrate this:
The armature on the left appears to be the proper one, with the Z axis pointing upwards and the X axis pointing right. The "Idle" action works, but the "Walk" and "Run" actions do not.
The armature on the right appears "broken", with Z pointing down and X pointing left. The "Walk" and "Run" actions work, but the "Idle" action does not.
This appears to be an issue with the actions themselves. I'd like to avoid reanimating this if possible, is there any way to edit the "Walk" and "Run" actions so that their bones are rotated properly?
You can find the .blend file here!