// Select the steps
$query = "SELECT * FROM j16_jupgrade_steps AS s WHERE s.status != 1 ORDER BY s.id ASC LIMIT 1";
$jupgrade->db_new->setQuery($query);
$step = $jupgrade->db_new->loadObject();
// Check for query error.
$error = $jupgrade->db_new->getErrorMsg();
// Require the file
require_once JPATH_BASE . '/migrate_' . $step->name . '.php';
switch ($step->name) {
case 'users':
// Migrate the users.
$u1 = new jUpgradeUsers();
$u1->upgrade();
// Migrate the usergroups.
$u2 = new jUpgradeUsergroups();
$u2->upgrade();
// Migrate the user-to-usergroup mapping.
$u2 = new jUpgradeUsergroupMap();
$u2->upgrade();
break;
case 'modules':
// Migrate the Modules.
$modules = new jUpgradeModules();
$modules->upgrade();
// Migrate the Modules Menus.
$modulesmenu = new jUpgradeModulesMenu();
$modulesmenu->upgrade();
break;
case 'categories':
// Migrate the Categories.
$categories = new jUpgradeCategories();
