Three questions: How do I move my entire sorted Bookmarks in the latest version of FIREFOX from the WINDOWS 7 PC to the WINDOWS 10 PC. Both are tower style PCs. Also, how do I do a similar task for THUNDERBIRD (latest version)? Last week, I started my WINDOWS 8.1 (tower) PC, opened FIREFOX. It displayed a suggestion to upgrade to the latest release of FIREFOX. I clicked on it, and it made the upgrade. However, I've lost all the Bookmarks at the left side of the screen AND the 'Home' icon at the top is gone also. Please explain how to get these back. A comment: When you publish these upgrades for both programs, WHY does these upgrades change a person's previous settings? I spent an hour the other day trying to put my Bookmarks (on the 8.1 PC) back to where they previously appeared on the left side. This is VERY annoying, to say the least. Thank you.