How to remove cards from a topic in the plan or from uncategorized cards
If a card has been assigned to a plan by mistake, it can be either removed or deleted.
To remove categorization of the card to the plan, tick the card and select the tag icon in the top menu.
Click on the "x Remove" option. The card will be removed from the topic in the plan but it will not be deleted. You can find the card in the "My library" tab in the "Not assigned to any plan" section. There you can reassign it to the correct plan. Categorizing teaching materials from My library to a plan by drag-and-drop
To delete a card permanently, press the "trash can" icon: