Hi, @David Moon
Thank you for posting in Microsoft Q&A forum.
I compared the xml file of CDN with xml file of MECM, the difference is the xml file of MECM has the OfficeMgmtCOM="TRUE".
For the reference:
https://learn.microsoft.com/en-us/deployoffice/office-deployment-tool-configuration-options#officemgmtcom-attribute-part-of-add-element
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