[odedta]

I told you that if you do this in excel you will have to c/p the links or the names (one of them) manually so it works well if you do this once or twice for TOCs, but if you want to do this a lot a more permanent solution needs to be found.

Javascript is a client-side scripting language, meaning, you can run it on your PC, I provided a link to a file called List.js which basically sorts a list in Alphabetical order and should retain the links for you.
I can see you don't have much experience in these matters so i'll create a simple template for you to use unless someone else comes up with a better idea.

There is a bit simpler method if you use Calibre, basically do the Excel sort you did last time, now open up Calibre then Edit Book, then edit toc and just use the arrows to sort your TOC according to the result in your Excel spreadsheet.