Thank you for that.
I see that attribute:

dn: cn=config
pwdLastSuccess: 20211201143557Z

dn: cn=schema,cn=config

olcAttributeTypes: ( 1.3.6.1.4.1.42.2.27.8.1.29 NAME 'pwdLastSuccess' DESC 'The timestamp of the last successful authentication' EQUALITY generalizedTimeMatch ORDERING generalizedTimeOrderingMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 SINGLE-VALUE NO-USER-MODIFICATION USAGE directoryOperation )

Does that mean i will have to change each "authTimestamp" attribute to "pwdLastSuccess" on my data dit ?

Of course once the ITS#9725 fix is applied.

Thanks!