Does anyone know how to do this?
I've deleted from here:
/_layouts/15/TA_AllAppPrincipals.aspx
Emptied all Recycle Bins & secondary recycle bins.
Tried PowerShell:
Remove-MsolServicePrincipal -ObjectId xxx
And it *still* shows up during a lookup here:
/_layouts/15/AppInv.aspx
How do we delete these things?