My company bought Camtasia v7 which was upgraded for free via the software to version 8. I have quite a few projects that were made in version 8. My laptop has been replaced so I had to install version 7 again with the key we have been supplied. I thought I would just be able to upgrade this to v8 via the check for updates but now it only gives me the option to buy version 9. I have downloaded the installer for 8 but it will not accept the key I have for version 7. How can I upgrade v7 to 8 like I did previously so I can edit my projects?