User blog comment:MisterWoodhouse/Our first update on the new platform/@comment-33280940-20191009172712/@comment-24006128-20191009173122

The two wikis would remain separate. We are not merging wiki contents as part of this migration.

We are moving the wikis onto a new codebase, with their edits, histories, content, and users intact.

While it is ideal for competiting wikis to come together voluntarily as part of Project Crossover, we are not mandating it as part of this planned migration.

No, there is no chance that the UCP becomes an app which unifies Fandom and Wikipedia. Wikipedia is a separate organization which is not part of Fandom, Inc.