Re: Using the same name space and root tag in two different orchestrations.

For test and production, you should really set up separate BizTalk environments on separate servers.  If there is no way to get dedicated servers for test, set up test on a virtual pc somewhere (preferably not on the prod server).  Deploy your app to test, test it, export an MSI file from test, and install it on prod.  Maintaining 2 versions of your apps would inevitably lead to disaster.