I'm just about done migrating Ex2003 to Ex2010. I've moved all the mailboxes and public folders. Mail is flowing well on the Ex2010 server. So, I tried to remove Ex2003 from the windows 2003 server. In the middle of the uninstall however, the uninstall wizard gave a generic error about a problem having occurred and stopped the uninstall. Now if I go to "Add Remove Programs", Exchange is no longer an option, so I can't try the removal again.
So my question is this, can I just go ahead and move the FSMO roles (this was also a DC) to the 2008 server and be done with this? Is there some reason I can't move the roles over even though Ex2003 hasn't fully un-installed yet?