Please use the Google Tag Manager (GTM) dashboard to configure any tracking code. GTM platform was added to the code to assist in all such requests.

Once the tracking codes are configured, you can use the Chrome plugin - Tag assistant - to verify the same.

Our feedback is that Google's Tag Manager should easily be able to handle this. Please follow the link provided below by Google team to see how it can be done:
Should there be any concern, we request you to reach out to the Google Tag Manager support team