If you go backwards in the initiative order, the animation will be left behind. This can result on animations on multiple tokens at once, though this appears to cap at 5 animations at once.
Oh, and ending combat with the extra animations will leave them on the tokens. The animations do get removed if you start combat again and cycle through each actor.
If you go backwards in the initiative order, the animation will be left behind. This can result on animations on multiple tokens at once, though this appears to cap at 5 animations at once.