Upgraded to latest version of cmon and clusters are empty

Problem is just as  the title says, I have performed the update written here : http://support.severalnines.com/entries/21095371-CMON-1-2-0-released-upgrade-instructions

I have updated the agents on the nodes as well, and changed the cluster from default... to our already created one in /etc/cmon.cnf

I dropped the cmon database and just imported a new (we were in testing anyway), and the old install of cmon continues to work and dispay

But the existing cluster does not display, any help would be appreciated.

I have no errors in any of the logs in /var/log/cmon.log

TYIA