Since the amazing update that allowed summons to travel through transitions,this has applied to creatures dominated by Lurue's Voice. However, as its not a spell, you cannot dismiss the spell and so dismiss the animal. Thus, you have the creature with you forever until it turns hostile and has to be put down
Ameris used to use this to spare animals by dominating them, walking them to a far side of the map, then releasing it. Can't do that now! As it will follow across maps so it can die in a foreign land.
This is very high priority!
