gistfile1.txt

<?php
namespace Setfive\DemoBundle\Listener;

use Symfony\Component\Security\Http\Event\InteractiveLoginEvent;
use Symfony\Component\Security\Http\Event\SwitchUserEvent;

class LoginListener
{
  
    /**
     * Fired on switch user, you can remove attributes or whatever you want here.
     * @param SwitchUserEvent $event
     */
    public function onSecuritySwitchUser(SwitchUserEvent $event)
    {
        $session = $event->getRequest()->getSession();
        $session->remove('partThatShouldNotCarryOver');
        
    }
}