Adding my experience with crediting of Accor China status nights.
I have a Accor Plus renewal date after 1 Oct 2025 change. On 1 Oct 2025, I was credited 10 bonus nights, presumably to bridge the gap between old 20 nights and new 30 nights with the changeover.
Accor Plus (Explorer+) renewed in November, got 30 nights for the renewal.
Took up the mid-tier Accor China card in December, got 20 nights, which took me over the 60 nights threshold and the status was instantly updated to Platinum on my ALL app.
ALL app shows status valid until 31/12/2026.
(although there may be a risk it will get wound back if Accor will enforce the max 30/50 bonus nights after 1/1/2026??)
However, I still got the benefit of the 2 SNU from reaching Platinum.
All up, not bad for CNY 1188 + 3% cost for Accor China, and even better if retain Platinum in 2026!