I sent it to Sydney, NS. But I read I read in different posts about Paris and London and other cities out of Canada, so I thought at one point before granting the visa they’ll send the file to an office that looks after applicants from certains regions. And from there the wife’s file gets processed again before the final acceptent. Anyway I’m not sure of all the steps. If you like you can check my previous post that shows all what I see online.It is where you sent it unless you receive an email informing you of it’s transfer