>releasing a new version of an archive means nobody's seeding it; and anyone moving over to seeding the new version stops seeding the old version BitTorrent v2

>releasing a new version of an archive means nobody's seeding it; and anyone moving over to seeding the new version stops seeding the old version BitTorrent v2 would in theory be able to seed individual files even if they come from a different torrent. But clients have no reasonable way to look for other versions of a torrent that contain a file they already have. The main Bittorrent clients already support creating and seeding v2 torrent. But there's just no infrastructure for seeding at the individual file level.