How do you create a SSRS 2008 R2 versioned Report?

Question

I'm using VS 2008 with SQL Server 2008 R2 BIDS installed.

My target Server version is SQL Server 2008 R2

I was looking at the RDL files today and noticed I have a mix of schemas. Some of my reports have:

<Report xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner" 
xmlns:cl="http://schemas.microsoft.com/sqlserver/reporting/2010/01/componentdefinition" 
xmlns="http://schemas.microsoft.com/sqlserver/reporting/2010/01/reportdefinition"&gt;

While others have:

<Report xmlns="http://schemas.microsoft.com/sqlserver/reporting/2008/01/reportdefinition"
 xmlns:rd="http://schemas.microsoft.com/SQLServer/reporting/reportdesigner"&gt;

Just now I went to create a new report, and it gave the report the 2008 schema. For some reason, I can't figure out how to create a 2008 R2 report with the proper schema.