BPRT is the Owner Workstation in Entra
Table of Contents
Why is the account BPRT set as the OWNER of the newly migrated Workstation in Entra?

That is because it is the "Actual user" that Entra Joined the device is using using the Bulk Enrollment Token that is configured on Directories and is used in your Runbook.

Because we can never know for sure the who the "real owner" of a device is we do not orchestrate changing that.
Intune
When it becomes Intune Enrolled it will show the actual user and that will be in the Intune Portal.

Change the Owner in Entra
You can change the owner in Entra using the AzureADDeviceRegisteredOwner commands.
First you will need the ObjectId of the Device you want to work with.
Get-AzureADDevice -searchString "THETA16"

Using Get-AzureADDeviceRegisteredOwner we can see the current Owner.
Get-AzureADDeviceRegisteredOwner -ObjectId 00a362f8-7404-4f6a-9ac0-4634850e10b1

Get the ObjectId of the current registered owner.

Use Remove-AzureADDeviceRegisteredOwner
Remove-AzureADDeviceRegisteredOwner -ObjectId 00a362f8-7404-4f6a-9ac0-4634850e10b1 -OwnerId 74f49d19-68e1-4ace-8898-6dca04177211
Add the real Owner
Use Add-AzureADDeviceRegisteredOwner with RefObjectId to set the owner to your real user.
RefObjectId is the Entra ID ObectId of your user.

Add-AzureADDeviceRegisteredOwner -ObjectId 00a362f8-7404-4f6a-9ac0-4634850e10b1 -RefObjectId 9965e4ed-a18a-4b71-8f1c-6c5dc0073b99

Now you can see that the Owner is set correctly.
