Comment 1 for bug 881019

About dropping columns. It would seem at first glance that the person column should be dropped from emailaddress to ensure that person are looked up via account. This breaks team and unactivated profiles which do not have accounts. It is possible to drop account from person...it is rarely used and can be gotten via the email address or query against account.

The other option is to drip account from email address so the table is restored to the schema before the SSO mess.