Magical Shortcodes :S

I created a website and used custom shortcodes, created within my functions file.

I’ve updated the site a few times now without thinking about what effect it may have on the shortcodes. Now I want to add to the shortcodes I already had but of course I can’t find the orginal shortcodes I created to add the new one too.

So why is it my shortcodes still function? Does wordpress make a back up and its calling the shortcodes from this older version, if so where can I find it?

Regards
Ben