M&M,
Since Appery 'models' are simply stored in localStorage as the equivalent of JSON.stringify() - you can move one instance of an object to another simply by saying localStorage.LSV_B = localStorage.LSV_A - again provided they are the same object model.
You can test this theory by examining an object in either Chrome or Weinre - and say oMyTempObject = JSON.parse(localStorage.LSV_A)....
Then examaming oMyTempObject by just asking for oMyTempObject at the console - and expanding the '' character.
You can then move LSV_A to LSV_B and issuing the same JSON.parse(localStorage.LSV_B)
The Appery 'models' are simply 'conveniences' (absolutely great) so that you can use the mapper on Object data stored as JSON.stringified representations of the object.
You should check out, if you get time - JSON.parse and JSON.stringify - a good working knowledge of how these work - can be invaluable.....for a number of use cases....
Best,
Bruce