[Dovecot] Folder not visible - after migration ( Squirrel Mail )

Hello,

We did migration from old version postfix to new version postfix (2.3).

From old dovcot 0.99 to dovcot 1.0 rc2 and we rsynched /Home of old box to new /Home 1:1 After migration we are not able to see customise the folders in squirrel mail interface. What could be the reason.

Regards, Sumit