Thanks for the heads up.
However, I noticed something concerning when I was adding offers. Amex Offers come in cash back/statement credit and Membership Rewards versions. As I was flipping through my Amex app, I got the eBags offer in cash back on my Platinum and in MRs on several of my biz charge cards. Eventually, I added the eBags MR offer to my new Biz Plat and went back to add the eBags cash back offer to my personal Plat -- but the cash back offer disappeared from my Plat!
Previously, Amex treated the cash back and MR versions of an offer to the same merchant as different offers, so you could add both offers to different cards or even the same card if you're lucky enough for both to appear.
I don't know if Amex is now treating cash back and MR versions of an offer as the same offer now, but after I added the MR version of the eBags offer to one card, the cash back version disappeared from another card just like if you had already added the offer to one of your other cards. (Unless the eBags cash back offer fully subscribed within the few minutes I was flipping through offers on other cards, but that's unlikely.)
P.S. I add all the wine, meal prep kits, a lot of the high-end fashion and home decor, streaming and web services offers that I'm never going to use onto my lesser used cards just so they don't clutter up the Available offers tab. I don't know if it gets me more offers, but it makes new and good ones easier to spot.
ETA: Further testing of adding the MR offer first did not remove the corresponding cash back offer from other cards. I can’t explain what happened to my Ebags cash back offer that disappeared from my Plat.