DS>   (a) I don't miss any mail in the switch
 DS>   (b) I don't send out mail from one feed to the other one.

Here's what I recommend to the people in our net when they're switching
feeds;

1) Poll your old uplink, picking up/returning mail.
2) Toss that mail.
3) Immediately re-poll old uplink with areafix message turning everything
   off.
4) Change your setups to reflect new link addressing.
5) Poll new uplink with areafix message turning everything on.
6) Enjoy new feed.

That process has always worked well here.  You might miss a little mail, but
not a significant amount, and the chances for dupes are reduced this way.
(Since your new uplink will have you in it's seenbys, keeping you from
getting your own mail.)

This is about the "safest" way to do it.  If you're using Seal for your
areafixer, you can have it automatically change the uplink for you.  (But
you'll still want to do a manual check that everything is OK in your
Squish.Cfg, just to be safe.)

--gary

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