Updating the theme when the template is updated is not an automated process. You just need to make sure the editable region is added to both the theme and the template.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.