How do you copy and paste separate animation files into one? (With an identical rig)

[Anonymous]

I have 2 files, one with a run animation and one with a walk animation, I would like to put all the frames from the one file onto the  timeline of the other. They are the same rig, so the controllers, and joint hierarchy is identical. 

I've tried exporting the frames from the walk animation and made room on the timeline in the run animation file, but when I paste the frames it imports successfully, but cancels out the run animation. I've also tried copy and pasting the frames directy on the timeline, but I have the same issue. 

Is there a way to import the keyframes of multiple animations files, when the rig is the same? 

[hamsterHamster]

Help>Animation>Non-linear Animation in Maya .. maybe that will give some insight.

[hamsterHamster]

Basically, all you need is to select all the controls and Animation>Key>CreateCharacterSet[All Keyable/Except] - now you will have one node to which all the animation curves are connected. Then you can go to Windows>AnimationEditors>TraxEditor and Create>AnimationClip, which you can export/import into another scene. Clips can be mixed, rearanged, reversed, slowed down or sped up.. therefore Nonlinear thingie mentioned before.