Moving cards or lists
You can move cards and lists within a board and you can even change the board to which they belong. You can also re-order checklists.
The most straightforward way to move a card is to simply click and drag the card up and down in the same list or between lists.
To move a card to a different board, click the context menu in the top right of the card and choose "Move."
You can also click the card to open it, then choose "Move" on the back of the card.
Just like cards, you can click and drag a list to move it within a board.
To move a list to a different position on the board, click the context menu in the upper right of the list and then choose "Move List."
You can also move lists to other boards from the list's menu. Click on the current board to select the new target board or adjust the list position by clicking on 'Position'
NOTE: When a card or list is moved to a different position on the same board or to another board, we’ll copy card descriptions, checklists, attachments, and comments. We won’t copy card history/activity.
Bulk List Actions
If you want to move or archive all the cards in the list, without affecting the list itself, use "Move All Cards in This List..." and "Archive All Cards in This List...".
Cards and lists that belong to a Trello Enterprise cannot move to boards outside of an Enterprise Workspace.