Auto-merge Triggers

I have 2 different swap sets of hand poses, namely the right hand and the left hand. Both swap groups has the same hand poses. However I would like to have it in one trigger swap set, instead of two. I can do this by creating swap set of, as example, the right hand, then manually move individual hand poses from the left hand group to the right hand swap set. It's a lot of work. Is it possible just to create for both hand groups its own swap set, then in the trigger panel, I drag either hand swap set to the other and have it automatically merged. So each hand pose trigger will have two trigger (right and hand) automatically.