I'm dealing with a client who reported the following "issue".
They have configured Azure AD Connect and device sync, everything seems to work. They deleted some computer objects from AD (dsa console) without disjoining them beforehand. Azure AD Connect continues to perfom synchronizations, but the computers still appear in Azure AD with Join Type <empty> (no longer Hybrid Azure AD Joined).
I'm wondering if this is normal and those computersmust be manually deleted from Azure AD, or Azure AD should automatically delete the computers objects once the related AD object is deleted.