I have identified a user that has created a sock puppet account to get around the 50 questions/30 days limit on Stack Overflow. I flagged him, made my case and this user has been suspended and the accounts merged (rather quickly I might add).
However, I actually identified this same pair of accounts as a possible duplicate accounts on another site first. He has a long history of bad questions there and saw some suspicious activity from the user so I flagged there. As I did my research, that was when I noticed the unusual activity on Stack Overflow which I felt I needed to act on more urgently.
So in the end, I flagged the same user twice on different sites: first on the other site where my flag is pending and the other on Stack Overflow where the flag was acted on. I'm not so sure what the mods will see on the other site.
Right now, I see my flag on that user with the links to the duplicate account looking odd since they are now merged on all sites. It now looks something like: "It appears this user X has a duplicate account as user X..." The user is only suspended on Stack Overflow (and not on other sites the user was registered with).
Will moderators of the other site know that some actions were taken on some user on another site?
I imagine there's a central moderator note listing per global account or something but thats only speculation. When the moderators look at that pending flag, will they immediately see that this account was merged with another? Or will they see what we see and will have to ask about it with other moderators?