Hi, Madhurya.
I think "Download Shibboleth2 configuration files" was designed to work with "Generate" method of creating TR. When "Generate" method is used, it's expected that SP you are creating this TR for doesn't exist yet, and you'll be using files you are downloading by clicking this link to initialize it (and that you will use Shibboleth SP software, of course). As you used "File" method for creating this TR, which implies you also provided metadata of already existing SP, I'm not sure why you need to download those files at all. It may be displayed for the TR created with "File" method by mistake (i.e. it may be web UI bug), we should investigate it.
If you indeed need these files to initialize your Shibboleth SP software, please try to use "Generate" method.
Best regards,
Alex.