This question is an exact duplicate of:
When I am flagging questions, I have tried to use the site migration flag(This post belongs on another Stack Exchange site), but I never have any options. Every time I click on that option, it only gives me one or sometimes 2 options and it's never one that would actually work. Is there a reason for this? I always thought it was only going to give me options for sites that I'm registered at, but it doesn't even give me all of those options. Is there a way to fix this or is this just how it is?