I assume they verified that the duplicate ballots matched what a reasonable person's interpretation of the original ballot would be. If the original no longer exists, then the duplicate is not valid. The reason for making a duplicate in the first place is that the original has a flaw which prevents it to be machine-counted, as I understand it. If they duplicated ballots which could have been scanned correctly, then that is another problem.
I assume they verified that the duplicate ballots matched what a reasonable person's interpretation of the original ballot would be. If the original no longer exists, then the duplicate is not valid. The reason for making a duplicate in the first place is that the original has a flaw which prevents it to be machine-counted, as I understand it. If they duplicated ballots which could have been scanned correctly, then that is another problem.