After using a treasure map and finding the treasure as intended, i broke the treasure chest. I then took another map from a shipwreck chest in the same area that I had previously opened but not removed the map from, and it linked to the same treasure chest, which had already been destroyed. I then went to a third shipwreck, opened the chest for the first time, and removed the map, and it linked to the same treasure chest location. I did check the area of the treasure chest in spectator to confirm, and there was no second loot in the same area.