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I need to set up a screen where I drag options from one list to another. However, when loading from the first to the second, only one copy should be created for the second list.
When the user performs the reverse process (load from the list 2 to the list 1) he must delete from the list 2 and do nothing in the list 1.
Kendo gives me the following example, but I can’t adjust it. Because every time I move the options back and forth the first list loses elements.
Thank you!