Don’t count on it now. They have had too much time to scrub the evidence.
That’s what I’d be worried about too, but the more widespread they do that, the more chance someone blows the whistle on it. Everything carries risks for them.
Hence the reason why True the Vote filed for a federal injunction to preserve all the ballots. If any lost ballots or altered ballots are found, then that is enough to bring about an immediate overturning of the runoff election and an order to redo it.
It’s really hard to alter a ballot especially on a large scale and to do so in a manner that is not obvious. So we can expect ‘lost’ ballots and in that case we can be assured the federal court will come down harshly on election officials.