While the new BTS 2009 has major improvements in its support for TFS, MS Build within it’s project structure, there was a breaking change to the Business Rule Engine Composer Schema Import process. In BizTalk Server 2004, and 2006, when importing a BizTalk Schema into the Business Rule composer, you had to be aware of the fact that the Composer did not get the Document Type property assigned correctly.
When importing the schema you had to verify the value of this property matched the fully qualified name of the .Net Schema class type.
If it did not, you must manually type it in. For BizTalk Server 2006 R2, this process was *sort of* fixed.
The way the R2 import process works is that the BRE Composer searches for a BizTalk Project file within the same directory of the Schema file. If it finds one, the import process opens the BizTalk project file, which is nothing more than an xml file, and looks for the Files section until it matches the schema name and pulls the Document Type property value from the Namespace and Root node name.
Well obviously BizTalk Server 2009 changed its project (Xml File structure) design to match MS Build project file formats, hence the support for TFS. The New format uses MS Build Item Groups, which are pointers to file locations for a Project setting.
The Business Rule Composer was not updated to refresh where the Document Type property value is pulled from, thus causing the Business Rule policies not to execute properly when using BizTalk Server 2009 and ESB 2.0.
By the way, the R2 version of the project structure still works, so theorectically, if you add a CData section to the 2009 project structure and add the Files ->Include->File sections as outlined above, then the Document Type will be pulled correctly.
So the point is- remember to manually edit the Document Type in the Business Rule Composer when using with BizTalk Server 2009 and ESB.