- Find one of the duplicated cards in the browser.
- Click the Cards button.
- Select each card type in the top drop-down box in turn, and compare the contents of the template fields and card preview pane. If the card types are identical, delete one of them (Options → Delete).
Scheduling
Extra copies of a card are coming up
Occasionally you may have been editing a note type and later discover that a number of cards are duplicated (sometimes there may even be more copies).
You can fix this as follows: