Checking that the links resolve is a good call before this gets buried. I’d also test the v2 and v3 pages on a couple of different browsers, since archived static docs sometimes break when relative asset paths are gone. On the changelog point, even a plain list of what each version changed would be useful alongside the regenerated docs. If anything else turns up from the old site, a simple index page linking the snapshots would keep people from assuming it’s all gone.