Deb,
Hi, we have, with all your help, successfully migrated here from Yahoo.
We are wondering: When members want to use a non-yahoo email address for
login, the best practice is to re-invite and delete the yahoo entry?
No.
The best practice is for them to go into their Groups.io profile and change their email address. Doing this will preserve the linkage between their subscription and their content (messages, files, etc.) - both transferred and new. With that linkage intact they have the ability to delete or edit their own content.
If they were to join anew, then the new subscription would be treated as a wholly different person.
If they're recently transferred from a Yahoo group chances are that they have not yet logged in at the Groups.io site. When they do, tell them to start by logging in using the email address they currently have in your group (their Yahoo address). Once they've confirmed that email address (received a confirmation message, and clicked through a link in it) then they'll be logged in under their current address, and can access its profile to change the Email address.
Yes, it may seem contradictory to start by confirming the email address that he/she does not wish to use, but it is a necessary first step to ensure that he/she really is the person who owns that email address. That confirmation gives them access to their Profile page.
And if we do that does it change the or delete any messages in the
archive that we transferred over?
Nothing in the archive would be changed or deleted in either case.
Shal
Shal Farley