No, sorry, The only attributes written back are these:
https://learn.microsoft.com/en-us/azure/active-directory/hybrid/reference-connect-sync-attributes-synchronized#exchange-hybrid-writeback
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Currently in our AD, mailnickname is "not set" for all users as we did not have Exchange Server, but after syncing local AD to AAD, we can't hide mailboxes from GAL and the part that's hindering us is that the NOT SET mail nickname does not match the AAD version.
Is there a way to have AAD send it's setting for accounts back to AD to populate it without having to do it user by user?
No, sorry, The only attributes written back are these:
https://learn.microsoft.com/en-us/azure/active-directory/hybrid/reference-connect-sync-attributes-synchronized#exchange-hybrid-writeback
thank you....this is gonna take a while :)