The “found” ballots may be mixed in with the real ballots by now. Election workers and officials are not going to admit to fraud. “Carelessness” maybe (like Hillary) if they are in a jam. FL needs an honest voter system, but the crooks need something they can continue to manipulate.
Then to my point - just say, ok, these weren’t segregated, we don’t know how they were handled or where they came from - therefore the election stands as is otherwise it could be tainted in either direction. No recount. Done.