Thank you for your interest in Telerik Test Studio.
Test Studio supports HTML and WPF applications. Thus the current version of the application to test could not be automated with Test Studio unless it is WPF.
In the terms of migration of the application to different technology I suspect that there isn't a tool which could convert scripts against one technology to scripts against absolutely different one. Certainly the structure and the elements of the application UI will differ based on the technology they are built on.
On the other hand Test Studio allows you to create test scripts with predefined elements before the application under test is not yet released. Then the elements could be mapped to the already existing. Please find some details here
I hope this will be useful for you!
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