How can I remove a person from group membership history?

Removing group membership history

When someone is mistakenly added to a group, generally that person is just removed from the group and it is assumed that because they are no longer in the group, there is not a record of that group membership.  But if the member was in the group for more than one day, a record of membership within that group will remain, unless you remove the history of that membership.

To remove group history for a person, first go to the group page.  Click the blue Reports button, then Group History.  A listing of all prior group members will show, along with the membership date range.  Click the red "x" to to the right of the member name to permanently remove the group membership history for a member.