How to Redirect / Open to Old Extra-net from New Extra-net?

Refer to the below attached video for the same.

To switch to the old extranet from the old extranet, click on Old Extranet button and it will redirect you to the Old Extranet.

Screenshot:

Note: Click on the old extranet still, you will be redirected to the New extranet or if it is the same page again, clear your cookies and cache once, and try again