I am posting a follow-up after reviewing tickets for today.
Win6 had a number of SubFTP accounts, these have always been an added service that we have performed, and is nothing something that we can "backup" and recreate on a new server, therefore when sometime like this crashes, a ticket will have to be submitted with the details to recreate the subFTP account, there will be no resolution to this until psoft has an integrated subFTP for windows servers.
If you are having problems with FTP, and know you have some SubFTP accounts, you will need to resubmit these requests and we will need to re-create them.