Index: editors/js/fckeditor-2.6.js
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/wysiwyg/editors/js/fckeditor-2.6.js,v
retrieving revision 1.16.2.1
diff -u -p -r1.16.2.1 fckeditor-2.6.js
--- editors/js/fckeditor-2.6.js	22 Jun 2009 03:00:15 -0000	1.16.2.1
+++ editors/js/fckeditor-2.6.js	21 Jan 2010 19:26:11 -0000
@@ -79,7 +79,8 @@ Drupal.wysiwyg.editor.instance.fckeditor
           data = Drupal.wysiwyg.plugins[plugin].detach(data, Drupal.settings.wysiwyg.plugins.drupal[plugin], instance.FCK.Name);
         }
       }
-      return data;
+      // #550428: Fix non-empty fields.
+      return data.replace(/^(?:<p>(?:&nbsp;|\s*)<\/p>|<br(?:\s\/)?)$/i, '');
     };
     instance.FCK.DataProcessor = new wysiwygDataProcessor();
   },