When you move an element in one layout you normally do not want the same represented element moved in another.
If this happened you would be constantly adjusting with no end in sight. Each layout is dealt with as a separate scene.
If you have elements inside a persistent Symbol then although moving a symbol in one layout will not effect the others you would be able to move an element within the symbol that will by the persistent symbols nature show the change on all layouts. But putting everything ins PS is not really wanted or useful in most cases.