[quote=@Sho Minazuki]
So his memories of the time are wiped? Shame. Could've been interesting. I don't think Vega would go out of his way to dig up such a past either.
[/quote]

They aren't wiped, he just affirms he doesn't know shit about his past to avoid being misunderstood due to his previous identity. Since the dark guild he was part of isn't even near Fiore - after all, he did take years to get there - it works pretty well to make it seen like he appeared out of nowhere.