Export from VS Designer to standalone / trdx

Hello, I'd like to, using the Standalone Report Designer, Import an existing Visual Studio Report (.cs) and save it as a trdx.

I have seen the following links:

http://docs.telerik.com/reporting/import-report-wizard

and

http://docs.telerik.com/reporting/standalone-report-designer-import-clr-reports

They indicate it possible but the second link seems for a different interface than mine. (There is no " In the Open dialog window, select .NET Report Library from the file type combobox. ")

and following the first link leads to an Import Report Wizard but in the "available converters" there is only Crystal Reports. Also the file filter gives no option for extensions other than *.rpt.

Do I have to install/ download a .NET converter?

I have Report Designer Q3 2015.

Thanks,

-Jeff