User blog comment:Cristina7/Introducing Discussions, a New Platform For Engaging Your Community/@comment-452-20161104233022/@comment-27345308-20161106181232

Hm. You're probably right, although Staff sure wouldn't want all those threads to vanish if a wiki chooses they do not want Discussions enabled on their wiki. They will disable Special:Forum, and if they can't migrate those threads to Discussions, where would they migrate them to?

Maybe there's some way I'm not aware of, though.