Blank Azure Object IDs

[Erin Scupham]

Running the audit of Yammer users who have an O365 identity as describe in this article.  Can anyone tell me what it means if the 'Azure_Object_ID' column is blank, but the 'Exists_In_Azure_AD' is true?  

[#2]

Good question. Do the users with blank Azure_Object_ID actually exist in your Azure AD? And are all users missing that attribute, or just some?