feature recreate seems to broken

I recreated an feature that has been overridden. The ThemeKey rules within the Feature were not overridden!
But the downloaded recreated feature lost the ThemeKey stuff:

Index: landing_page.info
===================================================================
--- landing_page.info	(Revision 6694)
+++ landing_page.info	(Arbeitskopie)

...

 features[node][] = landing_page
-features[themekey_features_rule_chain][] = node:type = landing_page >>> landing_page_theme
 features[user_permission][] = access socialshareprivacy

 ...

Index: landing_page.features.inc
===================================================================
--- landing_page.features.inc	(Revision 6694)
+++ landing_page.features.inc	(Arbeitskopie)
@@ -30,17 +30,3 @@
   );
   return $items;
 }
-
-/**
- * Implements hook_themekey_features_rule_chain().
- */
-function landing_page_themekey_features_rule_chain() {
-if (!defined('THEMEKEY_PAGECACHE_UNSUPPORTED')) {
-    define('THEMEKEY_PAGECACHE_UNSUPPORTED', 0);
-    define('THEMEKEY_PAGECACHE_SUPPORTED', 1);
-    define('THEMEKEY_PAGECACHE_TIMEBASED', 2);
-  }
-$rules = array();
-
-return $rules;
-}