I would say use a new layer with 0% opacity and then use an event to move it to the layer that you want and then once action completed move it back to the 'Invisible layer'
used a plugin called moveto works great I just set up a couple of invisible sprites on each end of my movement and had my object move to one, wait a second, and move back to the other invisible sprite
For this particular use perhaps using the sine behaviour would also work well ?
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