There are different ways this could go.
The best result would be electronic evidence that *once cast*, Trump votes were exchanged for Biden votes. This would mean that just the vote totals would be changed.
Much harder would be to prove that ballots themselves had been false, because this would mean a ballot by ballot review.
I think the multiple witness affidavits describing truckloads of ballots, in boxes and minus their envelopes, arriving in the dead of night via trucks might have some evidentiary impact.