I got my card/stickers yesterday. Probably the Italian post at fault. All these cards we're getting were probably sent 9 months ago.
My mom once sent me a letter (she lives in Rome) and I got it over a year later.
Lazy Italians... ;D
I've got one of the combo scanner/printer/fax machines. So I scanned in my paperwork and almost faxed it to Ducati but thought about the phone charges for a multiple page fax to Italy at the last instant. So I emailed them all as attachments ;D
They'll let you know what they need for a used bike. It may depend on what they have on it in their database. I think they wanted so much documentation on mine because they had lost track of it after the first owner.