@I-AM: use the exclusion options in the xml file to avoid migration of those folders
@bogit: Administrator credential login doesn't work at our szenario neither. We've got a support call for that problem (login on to Cyrus IMAP4 Server) but I don't think that this will lead to success. I'm VERY disappointed about the fact that this tool has so many problems we have to deal with in the extremly short time frame of our migration! We will have to use an open source tool to migrate to 2k3 and from there to 2k7. This su***! And I can't really understand why the Transporter suite is unable to do proper folder mapping like INBOX to oldmail. This is something you have to consider before you release such a tool. People are relying on those tools guys! Don't make the same mistakes as with Exchange RTM.