Forefront for Exchange re-install for SP1

So the only way I could get exchange 2007 sp1 to install was to uninstall forefront, then re-install it after the sp1 install. This was fine in the lab, but i was very worried about doing this in production because of the customizations I had performed and 30 days of messages in quarantine. It turns out, all custom lists, customizations and quarantines are preserved even with a full uninstall then re-install. Way to go Microsoft!