There shouldn't be this option: "Continue until the unclaimed coins are swapped:" because there are people who probably forgotten about 42, lost their wallet due to data corruption and could be used to troll, someone could say "There's one dent left! We can't continue until this dent is swapped!" There would be no moving forward.
This option means that miners will continue to mine the old coins and swap them for the new (
and sell every day) until the last coins are swapped. As for the us, we will continue as we continue...