It’s working but please read… I use Protonmail which suggests/recommends 3 CNAME “DKIM” records. Those are the ones that didn’t carry over, but it appeared proxied back to Google (see orig post). Do I understand that correctly?
So, back in Google Domains, the domain in question eventually disappeared (since I transfered it successfully to Cloudflare) and I started to wonder how that proxy was, or could be, working.
Again, I may just not understand this proxy in this context. Not wanting my config to be referring to anything at my old registrar, I decided to recreate the 3 CNAME records (as described in the link below) in Cloudflare and delete the proxy record show an above. All seems fine.
Note: for any protonmail users who might stumble into this thread, here are two links that I found helpful: