The link below instructs the user in step #3: "Select the first folder under the XML folder, drag it to Solutions Explorer in Visual Studio, and drop it into your project. Repeat for each of the sub-folders in the XML folder, creating the same folder structure in your project." While this is a great way to get the schemas into the project it leaves out an important step. Click on one of the imported schemas and notice in the properties box the "Build Action" is set to "None". This must be changed to "BTSCompile" or nothing will be deployed. When the setting is correct the application should show the schemas from the BizTalk console.

http://msdn.microsoft.com/en-us/library/bb886929%28BTS.10%29.aspx