Mail Contact - Manager Attribute

Hi,

As part of our monthly audit in exchange we export all the Mail Contacts, along with the manager attribute. 

I run a EXO PowerShell script to pull a selection of attributes one being the Manager. The exported csv file, the manager is all blank even though it is populated.

The question is, is this populated and fed through AzureAD and not stored in exchange, and this is the reason why the script doesn't extract and show this. 

For example, when I run this short script: Get-MailContact -Identity "MyName" | FL

The manager attribute doesn't show, though when I run this:

Get-MailContact -Identity "MyName" | Select-Object Manager

It shows the manager but no value there.

PS C:\WINDOWS\system32> Get-MailContact -Identity "MyName" | Select-Object Manager

Manager
-------

Any help or advise would be greatly appreciated.

Thanks