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If I understand correctly, from Entra connect utility you have added an info attribute in Directory extensions and you would like to know the attribute is sync with the Entra ID or not.
By using Synchronization Service Manager, you find the result of attributes sync.
Please read Sync Service Manager Metaverse Search for more details.
Hope this helps. Do let us know if you any further queries by responding in the comments section.
Thanks,
Akhilesh.
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