Hi Rahul.
Here's what I mean for my 'wrinkle' above....
Currently, we have a DTM web property "www.packagingdigest.com".
Since one cannot have 2 DTM web properties set up on the same URL, For the new DTM web property, I believe I would set up the new web property's "additional domains" field: "eastpack.packagingdigest.com,packextoronto.packagingdigest.com". This way, the "www.packagingdigest" web property would be unaffected by the new web property using the 2 subdomains.
Am I making sense?
Thanks!