If you have the files loaded in the RTC client, you can use Team > Move in Repository... to move them to the other component. This will create 2 change sets, one for the removals in the first, and one for the additions in the second. You could then deliver the additions, and discard the removals. The result would be a copy, but where you'd have the contents of the second component loaded. You could reload the first component and select all to overwrite to get back to your starting state. The names of the components don't matter. Note that this approach preserves version history.