[Evolution] How to resync email headers and actual emails

[Robert McDonald <evolution-list dancingkayak com>]

For some of my earliest emails for one account, Evolution list pane
shows summary data about emails that doesn't match the full emails
shown in the message pane when I click on a message.  How do I get
Evolution to resync its local understanding of my emails with the
actual emails in my account?

-- 
Robert McDonald