“If you have a better explanation, let’s hear it.”
Yes it was election fraud.
That’s my “explanation”.
Are you arguing otherwise? It’s hard to tell from your posts.
Then they have to accept the address change, give them a ballot and put the ballot in the big pile (not provisional). A real audit would look through all the materials. There would be no way to know which ballots were cast fraudulently if it turns out the person doesn't live at the new address.