You cant store them and load the game. A stored reference will spawn once and then the next item in the list will indeed spawn with correct appearing logic. But that object is invalid and came from an invalid reference so it cant be referenced by the items. Aka if you set a slot to disabled then spawn on object from index 2 of a list after loading it will spawn it and enable the slot but the slot is actually empty for functions and full at the same time. Aka if you have logic that say removes text from something based on a click event or drop event it will fire as if an item is in there and remove or add all the stuff as long as the stuff is not referencing itself because itself is invalid. How is it possible that unreal engine cant save variables yet people have claimed to have made and launched games from it? i can say with 100% fact no game has ever been produced and packaged from it. The act of packaging breaks half the references 100% of the time randomly based nonsense blank lists which are filled from a save list. so one can assume you can never put them in a list and hope it works but i honestly doubt that.