Hi Bruno,
Thank you for providing the detailed information to us.
Meanwhile i'm trying a few more steps to troubleshoot this issue. I'm trying to followtechnet.microsoft.com/.../jj710171.aspx to get this issue solved.
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When you mentioned the information above, do you mean that this issue has been resolved by referring to the article you provided?
If the issue persists, I suggest you check whether these old users in old OU can be returned by running the command in PowerShell:
2. Run the command below:
Get-Msoluser |Where-Object {$_.LastDirSyncTime -ne $null } | Export-CSV F:\federateduser.csv
Thanks,
Jolin Qiao
Jolin Qiao
