[kiwidude]

@Lady - just keep reading the instructions in the post from paw3pals - they explain the "now what". The step you have just taken of modifying Tweaks just means that whenever you add a *new* book to calibre (or rename an author for an existing book), that whatever you type as the author will be copied to also be how that author sorts on screen. So that if you type "Bloggs, Joe" as an author, it is going to *copy* the same value into the author sort as "Bloggs, Joe" for it.

However your issue next is twofold. You have a whole bunch of existing books you can see need changing because they were there before you changed the tweak. The problem is that even if you went through and just changed them on screen (either by typing in the library view, or using the single/bulk metadata dialogs, or even using the Quality Check plugin) that probably isn't going to completely solve your problem. The reason being that the very first time you add a book for an author to calibre, calibre will set a "default sort" for that author name that is associated with the author itself. Confusing I know - it had me in a pickle when I started. There is a sort for the author for each book, and there is a default sort for the author itself. Likely you will have a mish-mash in this field if you have been (like I did) experimenting with renaming authors without changing the tweak first.

So what you need to do is follow paw3pals instructions of using the Manage Authors feature to change this "Default" sort for an author. It just so happens that when you do that, there is buttons on that dialog as per their instructions which will also effectively let you "fix" all your book authors too. A two for one deal - go through this little drama once and you will never have to bother again.