Of course, this could all change at the drop of a liberal puke congress hat (small c now - it isn't worth capitalizing).
I've often wondered, if in the case of true attempted confiscation of all guns, whether dealers would toe the line and not 'lose' their books.
I’m not a gun savvy person but I think if one wants to get guns badly enough, one can find a reason for it. I wouldn’t be surprised to see an attempt to require everyone to disclose possession of guns and then use that requirement to justify a search if they suspect guns were not reported. I know that seems far-fetched but too many people seem to believe whatever the nice government tells them to believe. The Second Amendment has been trashed for decades now and a lot of people now believe it protects only state militias rather than individual rights.
I would hope the dealers would “lose” the records. Perhaps a little selective fire or flood damage?