I have a large number of folders in trees that go several levels deep. Sometimes over the years I have made two folders on similar topics. I understated that there used to be an add-on that was discontinued after about version 54, that would do this. I understand that there is a very tedious process to identify the folder for a specific link. I want to be able to view, search, and even possibly move folders to another part the tree, much like a Windows folder, so that I can move the links from, say, HP printer, all together and delete the links that I no longer need. If such an add on does not now exist, how do i submit a request to Mozilla to have this done?