I have a groups mail settings that are not working.
Using the auto complete gave the option of just the group name or the group name with the same name in carrots to the right.
One of the groups follows my preference setting to hide all group recipient email addresses.
The other group shows all the addresses.
To fix the problem I renamed the group and deleted the old name from the On My Mac list of groups.
Now the original name does not appear, but the one with carrots is still there--although I get the warning it does not appear to be a valid email address.
How can I make it go away?