How do you do this?? I can export my bookmarks to a folder, and if the bookmarks name already exists, it tells me so and asks if I would like to replace the existing file with the new one. OK, so far so good. But when I want to import the bookmarks file to Firefox, there doesn't seem to be any provision to replace the existing bookmarks in the Firefox browser, they are appended to the existing bookmarks instead, and I end up with both the existing bookmarks and the new imported bookmarks. I can't see any way to delete the existing bookmarks as a whole, and have to go through and delete them one by one.