I login to BBO, go to the deal that I want, click on the three lines, click on Export, click on Handviewer link, click on the web address which appears on the page, and I get the deal, which I can replay. Everything is fine. I then close the Handviewer link, and repeat the process for another deal. But this time, when I click on the web address for the Handviewer link, nothing at all happens. The deal just doesn't appear. But if I exit BBO and log in again, it works fine just as it did at first.