Hi,
My group allows non-members to post. Let's say I approve a message from a non-member, and that person later joins the group with the same email address that they used when sending as a non-member. Once they join the group, the messages they sent while a non-member do not appear the same way in the groups UI as messages they sent after they become a member. The non-member messages don't show their avatar, and you can't click their username/"from" name to see their profile. For the messages sent after they become a member, the avatar shows, I can click their username/"from" name, and clicking "All messages by this member" only show the emails sent after they became a member. Screenshot to illustrate:

I would like ALL messages sent by a particular address to be treated as if the user was a member when the message sent. Is there a setting somewhere that I've missed?
Thanks in advance for any help!
-Steve