When moving from one nested listing to another, the element move but creates a clone on the older list.
I've made this plunker to recreate the problem.
If you move, for example, one "Shirt" from the "Shirt list" into a "Shoes list", the shirt will move, but the same shirt will be recreated on the "Shirt list" again, cloning the element.
When moving from one nested listing to another, the element move but creates a clone on the older list.
I've made this plunker to recreate the problem.
If you move, for example, one "Shirt" from the "Shirt list" into a "Shoes list", the shirt will move, but the same shirt will be recreated on the "Shirt list" again, cloning the element.