Not sure I understand why are taking the legal route, instead of filing complaints with the appropriate authorities in Italy and HK. It will take years, cost a lot of money and its highly unlikely he will even show up in court, even if you figure out where he lives and manage to serve him. If you get the police involved, at least there is a chance they will catch him.
Hmm.. I'm not sure if I understand your question here, from my first post in this thread:
"....then we take that list and make a criminal complaint and submit it to Italian "Polizia Postale" the Italian cyber-crime unit."
And after the police have done their investigation and found out who is responsible for this scam, we can take the case to court and try to get the lost money back. This will be the next step after the complaint and the police investigation, and as you say this is a separate process from the complaint and this is going to take time and cost money, but right now we are concentrating on getting all the information we have to the police so they can start their investigation.
Hope this helps.