SLDDRT file type

I copied four template files, edited them and saved them intoa sub-folder in my drawing templates folder. When I attempt toreplace the title block with the newly edited versions, I can notsee them when I browse to their folder. I have added this folder inmy file search paths. When I look in the drawing templates folderin a window explorer window I see a DRWDOT and a SLDDRT version foreach template file. In my new folder I only see the DRWDOT file.I'm missing something, can anyone help?

Thank you,

Andrew GroveSolidworksDrawings And Detailing