Where do I set the community base URL?

Solid breakdown. The only thing I would add is to back up before making the change — better safe than sorry.

For what it is worth, the same approach works with the PMPro adapter — the membership side is identical from here.

Appreciate the clear steps. The dry-run tip in particular saved me from a mistake I would not have caught otherwise.

Following this thread closely. We are about to face the exact same decision and the replies here are gold.

One caveat for larger communities: keep an eye on the indexes. At a few thousand rows the difference is night and day.

Appreciate the clear steps. The dry-run tip in particular saved me from a mistake I would not have caught otherwise.