| C | ↛ | Request removed |
| ⇢ | A | Session::flashManagement() added | |
| C | ↛ | Request::normalize() removed | |
| C | ↛ | Request::__call() removed | |
| B | ↛ | Request::setSession() removed | |
| B | ↛ | Request::__construct() removed | |
| B | ↛ | Request::registerFlashdata() removed | |
| B | ↛ | Request::getFlashdata() removed | |
| A | ↛ | Session::flashGarbageCollection() removed | |
| A | ↛ | Request::setFlashdata() removed | |
| A | ↛ | Request::removeSession() removed | |
| A | ↛ | Request::destroySession() removed |