User blog comment:JoshuaJSlone/Wiki Business: Namespaces, Favicon/@comment-24833026-20150126220438/@comment-131168-20150127162857

OK, I've done a little more research into what transitioning to thew new Forums would do. From w:c:community:Help:Forum: ''The "Forum" namespace, used for the older, wiki-style forums, becomes editable only by administrators (for maintenance purposes) and all content in that namespace acquires a header directing users to Special:Forum. The header is styled according to the wikia's theme, and should prevent any user confusion if the wiki-style forums had been used on the wikia in the past.''

So it's a lot more painless than I worried.