Converting a theme to a later Drupal version
Reference · Lead in page for converting older Drupal theme to newer Drupal theme · Themers · Drupal 4.7.x · Drupal 5.x · Drupal 6.x · Drupal 7.x · No known problems
Last modified: August 25, 2009 - 03:43
If you upgrade a site from one version of Drupal to another, you must take specific steps to make your theme compatible with the new version.
Always test the modifications on a separate development server before moving to a production site.