Anki needs to be restarted after changing the config.
merge_notes_shortcut- A key combination used to perform a merge.delete_original_notes- Delete redundant notes after merging.merge_tags- Merge tags of selected notes in addition to contents of fields.field_separator- This string is inserted between the merged fields. Empty by default. Common options would be to change it to a single space:" ", or to a linebreak:"<br>".ordering- The way cards are sorted before merging.reverse_order- Sort cards in reverse. ForDueordering this would mean that a card with the biggest due number will receive the content of other selected cards.show_duplicate_notes_button- Add a duplicate button to the browser context menu.duplicate_notes_shortcut- A key combination for the "duplicate notes" action.ignore_punctuation- Remove punctuation characters before comparing two fields.punctuation_characters- Characters that need to be excluded from comparison.