Hello @Anonymous
I did try to review this, and found that as now we still do not support exporting configured list of User Attributes & Claims for a given Azure servicePrincipal. The possible methods that can be performed via PowerShell or Graph API are listed here: servicePrincipal resource type | Methods
You can check out similar QnA post in which this has been answered: Export the User Attributes & Claims
I hope above details answer your query.
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