Thanks for answer. My mistake, I have not explained well. By example.
1. I open Calibre and search for Pablo Neruda (authors:"=Neruda, Pablo")
2. Then I select a book, anyone
3. To the right of the screen I see the cover of the book and some information about it
4. If I move the cursor over "Authors: Neruda, Pablo", Calibre shows me the web address assigned by myself to this author, in this case
https://www.epublibre.org/autor/index/2813
5. Now, I go to the website where I download epubs
6. Search for something new by Pablo Neruda, and download it
7. Add this book to my library
8. Close Calibre (only for precaution)
9. Start Calibre and search for Pablo Neruda
10. Now, when I move the cursor over "Authors: Neruda, Pablo" I see this link:
https://google.com/search?q=Neruda,+Pablo
That's the problem. At this moment I have 2,109 authors and 8,537 (8,440 epub and 99 PDF). I have Calibre 2.49 [64bit] version. Any time I add one or more books, If the author have a personal link, when I add a new book, this link is restored to the "original"
Again, sorry my grammar
Best regards from Lima, Perú