This was added by @EBernhardson in rEFLW277c76fb36b1: Allow moving flow boards. I think the intended purpose is to update content that depends on the board title (e.g. magic words, or self-links being bold if the latter worked in Parsoid).
But it doesn't work now for two reasons:
- setNextContent checks whether the (HTML in this case) content changed. If not, it doesn't even call setContent (if it did, setContent would round-trip it, which could still cause different HTML).
- newNextRevision also calls hasSameContentAs, which is now based on wikitext. For the purpose of this, it's not even expected the wikitext might be different.
We probably need a way to force an edit here even if it's the same wikitext, similarly to how normal page moves show up in page history.