It looks like that when you use the "search in results" feature, the "edit search" fails at least in some cases, as the created search is not the same. Example (works with ktd sample data) * In the staff interface, go to advanced search * Search for: Subject, phrase: biography * You should have 22 results * Enter "music" in the "Search within results" search box on top of the results list * You should have 3 results /cgi-bin/koha/catalogue/search.pl?idx=su%2Cphr&q=biography&&&limit=music * Click "Edit this search" link on top of results list * Verify both criteria show up in the form (the music one is at the bottom) * Don't change the form, just search again * NOT OK: 0 results /cgi-bin/koha/catalogue/search.pl?advsearch=1&idx=su%2Cphr&q=biography&limit=music%3A&other_music0=on&sort_by=relevance