Troubleshooting api & integrations — where to start?

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.

Tried this on a staging copy first and it behaved exactly as described. Confident enough to roll it to production now.

Strong agree. Good defaults beat a wall of toggles every single time.

This is the answer I wish I had found six months ago. Would have saved me a weekend of trial and error.