diff --git a/source/script.php b/source/script.php
new file mode 100644
index 0000000..0573c5a
--- /dev/null
+++ b/source/script.php
@@ -0,0 +1,194 @@
+<?php
+/**
+ * MokoWaaS → MokoSuite Migration Wrapper
+ *
+ * This script runs when existing MokoWaaS sites update to the migration
+ * package. It downloads and installs the MokoSuite package, which handles
+ * all table/param/extension migration in its own postflight().
+ *
+ * @copyright  Copyright (C) 2026 Moko Consulting. All rights reserved.
+ * @license    GNU General Public License version 3 or later
+ */
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\Installer\Installer;
+use Joomla\CMS\Installer\InstallerAdapter;
+use Joomla\CMS\Log\Log;
+
+class Pkg_MokowaasInstallerScript
+{
+	/** @var string URL to the MokoSuite stable release package */
+	private const MOKOSUITE_URL = 'https://git.mokoconsulting.tech/MokoConsulting/MokoSuite/releases/download/stable/pkg_mokosuite.zip';
+
+	/** @var string|null Saved download key from the old update site */
+	private ?string $savedDownloadKey = null;
+
+	public function preflight(string $type, InstallerAdapter $parent): bool
+	{
+		$this->saveDownloadKey();
+
+		return true;
+	}
+
+	public function postflight(string $type, InstallerAdapter $parent): void
+	{
+		$app = Factory::getApplication();
+
+		// Download the MokoSuite package
+		$tmpPath = Factory::getApplication()->get('tmp_path', sys_get_temp_dir());
+		$zipFile = $tmpPath . '/pkg_mokosuite_migration.zip';
+
+		// Append dlid if we have one
+		$url = self::MOKOSUITE_URL;
+
+		if ($this->savedDownloadKey)
+		{
+			$url .= (strpos($url, '?') === false ? '?' : '&') . $this->savedDownloadKey;
+		}
+
+		try
+		{
+			$http = \Joomla\CMS\Http\HttpFactory::getHttp();
+			$response = $http->get($url, [], 60);
+
+			if ($response->code !== 200)
+			{
+				$app->enqueueMessage(
+					'MokoSuite migration: Failed to download package (HTTP ' . $response->code . '). '
+					. 'Please install MokoSuite manually from the Joomla extension manager.',
+					'error'
+				);
+
+				return;
+			}
+
+			file_put_contents($zipFile, $response->body);
+		}
+		catch (\Throwable $e)
+		{
+			$app->enqueueMessage(
+				'MokoSuite migration: Download failed — ' . $e->getMessage() . '. '
+				. 'Please install MokoSuite manually.',
+				'error'
+			);
+
+			return;
+		}
+
+		// Install the MokoSuite package (its postflight handles all migration)
+		try
+		{
+			$installer = Installer::getInstance();
+			$result = $installer->install($zipFile);
+
+			if ($result)
+			{
+				$app->enqueueMessage(
+					'<strong>MokoSuite installed successfully!</strong> '
+					. 'Your MokoWaaS installation has been migrated to MokoSuite. '
+					. 'All settings, tickets, and data have been preserved.',
+					'message'
+				);
+			}
+			else
+			{
+				$app->enqueueMessage(
+					'MokoSuite migration: Package install returned false. '
+					. 'Please check the Joomla installer log and install MokoSuite manually if needed.',
+					'warning'
+				);
+			}
+		}
+		catch (\Throwable $e)
+		{
+			$app->enqueueMessage(
+				'MokoSuite migration: Install failed — ' . $e->getMessage(),
+				'error'
+			);
+		}
+		finally
+		{
+			// Clean up temp file
+			if (is_file($zipFile))
+			{
+				@unlink($zipFile);
+			}
+		}
+
+		// Transfer the download key to the new MokoSuite update site
+		$this->restoreDownloadKey();
+	}
+
+	/**
+	 * Save the download key from whichever update site exists.
+	 */
+	private function saveDownloadKey(): void
+	{
+		try
+		{
+			$db = Factory::getDbo();
+
+			foreach (['pkg_mokosuite', 'pkg_mokowaas'] as $element)
+			{
+				$db->setQuery(
+					$db->getQuery(true)
+						->select($db->quoteName('us.extra_query'))
+						->from($db->quoteName('#__update_sites', 'us'))
+						->join('INNER', $db->quoteName('#__update_sites_extensions', 'use') . ' ON use.update_site_id = us.update_site_id')
+						->join('INNER', $db->quoteName('#__extensions', 'e') . ' ON e.extension_id = use.extension_id')
+						->where($db->quoteName('e.element') . ' = ' . $db->quote($element))
+						->setLimit(1)
+				);
+				$key = $db->loadResult();
+
+				if (!empty($key) && strpos($key, 'dlid=') !== false)
+				{
+					$this->savedDownloadKey = $key;
+					break;
+				}
+			}
+		}
+		catch (\Throwable $e) {}
+	}
+
+	/**
+	 * Copy the download key to the MokoSuite update site.
+	 */
+	private function restoreDownloadKey(): void
+	{
+		if ($this->savedDownloadKey === null)
+		{
+			return;
+		}
+
+		try
+		{
+			$db = Factory::getDbo();
+			$db->setQuery(
+				$db->getQuery(true)
+					->select($db->quoteName('us.update_site_id'))
+					->from($db->quoteName('#__update_sites', 'us'))
+					->join('INNER', $db->quoteName('#__update_sites_extensions', 'use') . ' ON use.update_site_id = us.update_site_id')
+					->join('INNER', $db->quoteName('#__extensions', 'e') . ' ON e.extension_id = use.extension_id')
+					->where($db->quoteName('e.element') . ' = ' . $db->quote('pkg_mokosuite'))
+					->setLimit(1)
+			);
+			$siteId = (int) $db->loadResult();
+
+			if ($siteId > 0)
+			{
+				$db->setQuery(
+					$db->getQuery(true)
+						->update($db->quoteName('#__update_sites'))
+						->set($db->quoteName('extra_query') . ' = ' . $db->quote($this->savedDownloadKey))
+						->where($db->quoteName('update_site_id') . ' = ' . $siteId)
+				)->execute();
+
+				Log::add('Migrated download key to MokoSuite update site', Log::INFO, 'mokosuite');
+			}
+		}
+		catch (\Throwable $e) {}
+	}
+}