1) It's worth noting that Rick Donaldson, another researcher, uncovered certified copies of the 1865 and 1867 editions of the Colorado Civil Codes which also contain the missing Amendment. Although these editions were stored in the Colorado state archive, their existence was previously un-catalogued and unknown to the Colorado archivists.
2) This raises a fantastic possibility. If there's insufficient evidence that Virginia did ratify in 1819, there is no evidence that Virginia did not. Therefore, since there was no time limit specified when the Amendment was proposed, and since the government clearly believed only Virginia's vote remained to be counted in the ratification issue, the current state legislature of Virginia could theoretically vote to ratify the Amendment, send the necessary certificates to Washington, and thereby add the Amendment to the Constitution.