That doesn't work either. See Arizona.
I am not aware of how Arizona works. In Indiana, I voted on a computer. I don’t like it. I think paper ballots at least give a hard copy of my vote. The Democrat cities of Indiana are probably routinely crooked with their voting.
Motor voter needs to be repealed. It is the cause of situations such as your personal example. Before it passed, we could tell the county clerk that someone had moved away or died and the precinct list would be updated. No more. The person has to miss two federal elections before a change can be made unless the voter makes the change. That means a deceased person is listed for four additional years. It’s gauche. The clerks can act from death certificates but seldom do.
Rich people with several homes in several states are voting in multiple states. This should be a felony with severe penalties.