Hi,
I have the same issue.
initial manual sync:
16:47:33 Updating #31 Martin <martin@gmail.com>
16:47:34 Success: Updated user 31
After changing the email:
16:52:21 Updating #31 Martin <martin@yahoo.com>
16:52:22 Success: Updated user 31
Now there is an extra record for martin@yahoo.com in Mailchimp. The first email still exists as well.
Kind regards,
Martin
