How to convert telerik report (.cs extension) to telerik report server (.trdx extension)

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server

Telerik

reporting

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Previously I'm using "telerik reporting" tool for generating reports, now I would like to use "Telerik ReportDesigner" tool, as a part of that I need to convert my previous reports.
Is there any ways to convert telerik reporting reports (.cs extension reports) to telerik report server reports (.trdx extension reports) ?

What I have tried:

Previously I'm using "telerik reporting" tool for generating reports, now I would like to use "Telerik ReportDesigner" tool, as a part of that I need to convert my previous reports.
Is there any ways to convert telerik reporting reports (.cs extension reports) to telerik report server reports (.trdx extension reports) ?