We are currently using POP3 and all clients are configured manually.  We have set up an Exchange 2013 server.  I imported a pst then fired up a new mail profile and let Outlook automatically connect to Exchange.  Everything works great.

I would very much like a way to update Outlook clients to not use the manual configuration, but instead connect to the new Exchange server.  Anyone have a better solution than manually reconfiguring each client?

Send users instructions to users explaining how to make the changes themselves.

You can configure the Office Customization Tool to change profiles, but it isn't exactly an easy thing to do.  For more information about that, I recommend that you post this in the Outlook Forum:  http://social.technet.microsoft.com/Forums/en-US/outlook/threads