Upgrade went great but one small snag - I changed my admin port from 81 to 8009. In /root/ispconfig/httpd/conf/httpd.conf it changed all the ports back to 81 (not huge) and in the /home/admispconfig/ispconfig/lib/config.inc.php it just slapped on :81 (so the line read
go_info["server"]["server_url"] = "http://www.*servername*.net:8009:81";
the *servername* was my edit....
Not huge and it still let me log in using :81, but might confuse some folks.