Why do closed cards still appear in the closed section , Is there a way to move out from the board ?

In Agile methodology, the Kanban board is often used to visualize the flow of work and the current status of work items. Work items that have been completed or closed are typically moved to a "Closed" or "Done" column. However, these closed work items can still be visible in the "Closed" column of the Kanban board, which may not be desirable in some cases.