u/Mediocre_Prior_1868

User attribute "Title" is updated correctly in on-prem AD and synced to Entra ID.

However, Exchange Online still shows the old value.

Archive GUID mismatch was identified and corrected.
AAD Connect sync (Initial) was executed multiple times.
Temporary attribute modifications were applied to force re-sync.

Issue persists only in Exchange Online (Get-User shows old Title).

Suspected stuck Exchange Online recipient object / backend sync issue.