Merging Actions

Hi guys,

I’m trying to make game animations. Everything is straight forward enough except for reload animations. I use the Child Of constraint to dynamically parent the magazine to the gun, the hand and then back again. I need to export the animation to Unity so I bake the child of constraints, but this creates a new action separate to the reload action. How do I combine the action for the baked constraint movements and the animation for the hand movement? I tried to use the NLA editor but the NLA editor seems to not work on a action by action basis.