MySite Host Change and Redirection Options

So, to dovetail off of the following discussion:

http://social.msdn.microsoft.com/Forums/en-US/sharepointadminprevious/thread/deced107-b3b8-48aa-9cd8-141f18b042a7

We recently migrated our mysite from classic to SAML Claims (3rd party TIP - Siteminder).  In that process, we physically (from a web app level) changed the mysite url from mysite.oldportal.com to mysite.newportal.com. 

My concerns were 2 fold:

1. Users legacy links that would be 'broken'
2. Users OneNote databases that they host on their mysites broken.

I wanted to make this seamless.  However, it's been anything BUT seamless.   At this time, I'd like to just change the MySite Host URL in CA (but, obviously, that can't be done) ... but, a normal 302 redirect from the old to the new portal would break onenote as the normal 302 wouldn't redirect a deep link correctly.

Anybody got any ideas?  Gotta keep this short ... if not, you'll tune me out.

_Greg

if my post is helpful - please click on the green arrow. (please excuse, in advance, any perceived sarcasm/humor - as I often forget it does not translate through text) :)