Philip G Graham
Please move to Groups.io. It is now imperative to do so. Yahoo has invoked this business of OATH just recently, and I note that Flickr has gone to SmugMug. So Yahoo userbility is being whittled away piece by piece and compartmentalized.
Of the other groups that have moved to Groups.io, one with a very big back archive of messages going back many years is the Industrial Railway Society, and their moderator had very little trouble with the move. Furthermore the archive remains searchable right back to the beginning.
There is little incentive to remain with Yahoo.
Philip G Graham - Tasmania (-PGG-)