Moved to Business > ePO for product help.
If the client machines are not reachable to ePO server then by default McAfee HTTP website will be set as fall back repository (can be verfied from Agent policy). Are you using VM snapshot or ePO Orion snapshot feature to restore the ePO?
If you don't have Orion snapshot of ePO then you need to restore ePO DB and folders as per KB#: KB66616.
I am not clear about second question.