HI! Jimbo! You're site is lookin' good!

Hopefully, you have a backup of your old files. If so, make a copy of
your includes/languages/english/html_includes/yourOLDtemplate folder. Rename yourOLDtemplate folder to your new template name, and upload to your updated store in includes/languages/english/html_includes/.

Hopefully, you won't have to re-do them all.