Yeah, +1 for this. This should definitely be implemented.
+1 on this. Exports should see as much parity with the original vault data as is feasibly possible.
Furthermore, a PR policy should probably be added:
If someone is adding a feature that adds a field to the vault data, in order for the PR to be approved, it should be accompanied by an addition of that field to all exports if there is no substantial reason it cannot or should not be added.
I agree. Especially previous passwords can really save the day, in case of a mistake. We should be able to back them up, too.
For what it’s worth, this would be a good first issue for someone looking to contribute and a PR I’d be happy to review/help out with.