View Report Builder 3.0 in SSDT

Hello,

I new to SQL Server environment,  created a file in Report Builder 3.0, saved as aTest.rdl, and successfully ran it.   When tried opening it in SSDT, Visual Studio 2010 to edit it, I an XML format aTest.XML.  Is there a way to open a file that was previously generated by Report Builder 3.0 in SSDT?

Thank you,

SaKa