Plesk 9 PMM has no cPanel migration agent - it must be installed manually.
How to install cPanel migration agent:
1.Go to /usr/local/psa/PMM/agents.
2.Back up existed 'cPanel' and 'shared' dirs.
3.Get http://download1.sw-soft.com/Plesk/Autoupdate/cPanel_Plesk9_eagent.tar.gz
4.Extract it to /usr/local/psa/PMM/agents.
5.Other agents may conflict with new 'shared' dir.