Unfortunately this is not the case. The account was erased when I tried to remove administrators from the policy approver role group, but I did not notice that the check box in the CCS Administrators group has also been checked. So, when I selected remove from role, the program removed the accounts from both policy approvers and CCS Administrators (and from all other groups). So now I resulted to have only one account in policy approver group.
We are trying to repair the installation with no luck, as the installer crashes. It would work if we could find where in the DB/filesystem/registry the permissions and roles are stored, but we did not manage to find this information.
It seems that it will result to setting the entire installation from scratch...