21 January 2018
List active directory group membership changes
$ADGroup = Get-ADGroup -Identity 'Domain Admins'
Get-ADReplicationAttributeMetadata -Object $ADGroup.DistinguishedName -Server dc1 -ShowAllLinkedValues
in the output the "AttributeName" is the attribute that was changed - we should search for the "member" attribute.
"AttributeValue" is the value assigned to the attribute.
"FirstOriginatingCreateTime" is the time the value was added.
"LastOriginatingDeleteTime" is the time the value was deleted - but only if is different from "1/1/1601 2:00:00 AM"