Remove Security Group from DirSync enabled Office 365 Address Book

Environment: Exchange Online, DirSync, Exchange 2010 sp3 to manage Distribution Lists.

We have a security group that is showing up in the Distribution Lists in Exchange Online. I removed the exchange attributes using the following command: Disable-DistributionGroup -Identity "Example Group". The group is no longer showing up on our on prem distribution list, but it is still visible in Exchange Online as a security group. I can see in DirSync that it did remove exchange attributes, and the only email address showing up in exchange online is an autogenerated onmicrosoft.com address. I even changed it to a global security group instead of a universal security group, but it still won't go away.

Hopefully I covered everything...
The only suggestion I saw online was deactivating dirsync, remove groups from office 365, and reactivate dirsync. There has to be a better way.

Thanks in advance.
bendretreadAsked:
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Vasil Michev (MVP)Commented:
No need to disable dirsync. Just run this:

 Get-MsolGroup -SearchString "group name" | ft *name,objectId

Open in new window


Note the value of the ObjectId attribute, then remove it:

Remove-MsolGroup -ObjectId b8cf2991-c04c-4744-ac71-5d0063bd1bea

Open in new window


Works again synced groups as well.
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