@
RJ2 - I don't know of a way to suppress the 'warning', such as an option to check similarity of Title
and Author. I often wish for it when adding to some libraries, but in another busy library I like having just the Title.
If anything were to be done, such as a tweak to include Author in Add Books duplicate checks, I would only use it if it was a library preference, if it was global I probably wouldn't use it.
Aside : one of the things I dislike about e-books is that I can't leave them in airport lounges, bus stops etc for others to read
BR