Originally Posted by
Goldorak
Just noticed, comparing my physical Platinum card from last year and my virtual Diamond 2020 card in the App that my membership number has changed. Two digits have changed :
- Platinum : XXXXXX4 XXXXXXXX 7
- Diamond : XXXXXX5 XXXXXXXX 4
Is that normal ? Why are they changing the number ?

Airlines do not change your number when you change status.
These are mine. Hope it somewhat helps cracking an Accor number pattern

xxx aaa 1 aaaaaaaa 8 - Classic/Silver, don't remember now.
xxx aaa 2 aaaaaaaa 6 - Gold
xxx aaa 4 aaaaaaaa 2 - Platinum
xxx bbb 6 bbbbbbbb 1 - A+ Platinum
xxx bbb 1 bbbbbbbb 2 - A+ Diamond