diff --git a/src/script.php b/src/script.php
index 6dc76a8..8672367 100644
--- a/src/script.php
+++ b/src/script.php
@@ -96,7 +96,6 @@ class Tpl_MokoonyxInstallerScript implements InstallerScriptInterface
             $this->clearFaviconStamp();
             $this->cleanMediaFolder();
             $this->removeDeletedFiles();
-            $this->removeDuplicateExtensions();
             $this->lockExtension();
         }
 
@@ -487,101 +486,6 @@ class Tpl_MokoonyxInstallerScript implements InstallerScriptInterface
         }
     }
 
-    /**
-     * Remove duplicate MokoOnyx extension entries from #__extensions.
-     *
-     * Re-installs or migrations can leave ghost rows.  We keep the one
-     * that is locked (the active template) and delete any extras.
-     * Also removes stale MokoCassiopeia entries if present.
-     */
-    private function removeDuplicateExtensions(): void
-    {
-        $db = Factory::getDbo();
-
-        // Find all MokoOnyx template entries
-        $rows = $db->setQuery(
-            $db->getQuery(true)
-                ->select(['extension_id', 'locked'])
-                ->from('#__extensions')
-                ->where($db->quoteName('element') . ' = ' . $db->quote(self::NEW_NAME))
-                ->where($db->quoteName('type') . ' = ' . $db->quote('template'))
-                ->order('locked DESC, extension_id ASC')
-        )->loadObjectList();
-
-        if (count($rows) > 1) {
-            // Keep the first (locked/lowest ID), remove the rest
-            $keep = (int) $rows[0]->extension_id;
-            $removed = 0;
-
-            for ($i = 1; $i < count($rows); $i++) {
-                $staleId = (int) $rows[$i]->extension_id;
-
-                // Remove from update_sites_extensions
-                $db->setQuery(
-                    $db->getQuery(true)
-                        ->delete('#__update_sites_extensions')
-                        ->where('extension_id = ' . $staleId)
-                )->execute();
-
-                // Remove from extensions
-                $db->setQuery(
-                    $db->getQuery(true)
-                        ->delete('#__extensions')
-                        ->where('extension_id = ' . $staleId)
-                )->execute();
-
-                $removed++;
-            }
-
-            if ($removed > 0) {
-                $this->logMessage("Removed {$removed} duplicate MokoOnyx extension(s). Kept ID {$keep}.");
-            }
-        }
-
-        // Also remove stale MokoCassiopeia if it exists
-        $oldExt = (int) $db->setQuery(
-            $db->getQuery(true)
-                ->select('extension_id')
-                ->from('#__extensions')
-                ->where($db->quoteName('element') . ' = ' . $db->quote(self::OLD_NAME))
-                ->where($db->quoteName('type') . ' = ' . $db->quote('template'))
-        )->loadResult();
-
-        if ($oldExt) {
-            // Only remove if no template styles reference it
-            $styleCount = (int) $db->setQuery(
-                $db->getQuery(true)
-                    ->select('COUNT(*)')
-                    ->from('#__template_styles')
-                    ->where($db->quoteName('template') . ' = ' . $db->quote(self::OLD_NAME))
-                    ->where($db->quoteName('home') . ' = 1')
-            )->loadResult();
-
-            if ($styleCount === 0) {
-                $db->setQuery(
-                    $db->getQuery(true)
-                        ->delete('#__update_sites_extensions')
-                        ->where('extension_id = ' . $oldExt)
-                )->execute();
-
-                $db->setQuery(
-                    $db->getQuery(true)
-                        ->delete('#__extensions')
-                        ->where('extension_id = ' . $oldExt)
-                )->execute();
-
-                // Remove non-default styles too
-                $db->setQuery(
-                    $db->getQuery(true)
-                        ->delete('#__template_styles')
-                        ->where($db->quoteName('template') . ' = ' . $db->quote(self::OLD_NAME))
-                )->execute();
-
-                $this->logMessage('Removed stale MokoCassiopeia extension and styles.');
-            }
-        }
-    }
-
     // ====================================================================
     // LICENSE & UPDATE SERVER MIGRATION
     // ====================================================================