I am working on an ASP.NET project in Visual Studio .NET 2010 and attempting to make an MSI installer using a Web Setup Project. I added the Primary output from the project (which seems to pull in the relevant dependencies) and the Content Files from the project (which pulls in the Web.config and the .svc files). 

The issue is that rather than applying the XDT transform and creating the Web.config using the Web.Release.config, it just copies the Web.config, the Web.Release.config, and the Web.Debug.config into the installer without doing any transformation at all. 

How do I get it to apply the Web.config transformation before creating the installer?