[chaley]

Originally Posted by Wiggo

First I click in the tag browser on my saved search "has series notes"

Attachment 207378 Attachment 207379

and then additionally on "one book per author"

Attachment 207380 Attachment 207381

and Dan Adams disappears. What am I doing wrong?

My guess is that "Dan Adams" is the author of books in a different series or no series, and one of those books is appearing ahead of the books with series with a note.

Order is important in "and" search clauses. Clauses following an "and" operate of the results of the previous search clauses. As such they don't see any books already filtered out. This "shortcutting" improves search performance a lot.

Try changing the order of the search to

search:"=#Has.Series notes" and search:"=#Has._One book per author"

This order ensures that the one-book-per-author search operates on the results of the has-series-notes search.