How to cancel a PIM group assignment made with New-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest

Question

We are trying to mimic the cancel action on an active assignment in PIM for Groups using Microsoft.Graph. We cannot figure out what command to use to cancel the active assignment:

We are able to use Microsoft.Graph.Identity.Governance to create an Active member assignment in a PIM group, using a syntax like the following:

	$params = @{
		accessId      = "member"
		principalId   = "$($user.Id)"
		groupId       = "$($group.Id)"
		action        = "AdminAssign"
		scheduleInfo  = @{
			startDateTime = $startDate.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ")
			expiration    = @{
				type        = "AfterDateTime"
				endDateTime = $endDate.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ")
			}
		}
		justification = "{0}{1:M/d h:mmtt} - {2:M/d h:mmtt}" -f $country,$startDate,$endDate
	}

	## Executing the assignment AS ACTIVE	
	New-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest -BodyParameter $params

If that assignment status is "Granted", that means it is still pending (aka start date is still in the future) and we are able to STOP the request as follows (which changes the assignment status to 'Canceled'):

Stop-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest -PrivilegedAccessGroupAssignmentScheduleRequestId $request.id

However, if that same assignment status is "Provisioned", it is currently actively assigned (start date is before [now] and end date is later).

While we can use the Entra admin portal's PIM area to cancel the request, and it shows the status as Canceled in Graph, we are unable to make the same call within Graph: We cannot use the same Stop-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest -PrivilegedAccessGroupAssignmentScheduleRequestId $request.id

The only calls that seem to work on the active assignment are like this:

$params = @{
    accessId = "member"
		principalId   = "$($user.Id)"
		groupId       = "$($group.Id)"
    action = "adminRemove"
    justification = "It is time to go."
}

New-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest -BodyParameter $params

However this becomes a separate request, and when viewing the original request audit, we now have to factor both requests in to see what's going on. The original request will still show "Provisioned".

Can someone please confirm what Microsoft.Graph.Identity.Governance command would CANCEL the current Provisioned request? Perhaps we can do an Update-MgIdentityGovernancePrivilegedAccessGroupAssignmentScheduleRequest somehow?

Thanks!