Reload/Mail problem

[kleroy]

After apparently being hacked, the plesk control panel stopped working. I was unable to backup from Plesk, however, I could backup my mail accounts and messages with mail enable.
Reformat/reload/recreate domain, then import accounts into mail enable. All works great, except for one thing, the accounts don't show up in plesk control panel under the domain, nor does horde work with the accounts....
Is there a way to import the accounts, or get them to show up in the control panel once again?

Thanks for any help/suggestions