Drag and Drop tasks between different plans
I have different plans for different people on my team, Sometimes tasks need to be moved to someone else. it would be nice to be able to drag a card from the board on one plan and drop it on an entirely different plan in the left-hand column.
Victor ORear commented
Look at the response to the link that Anonymous posted "https://planner.uservoice.com/forums/330525-microsoft-planner-feedback-forum/suggestions/11465613-add-the-ability-to-copy-or-move-a-task-to-a-bucket" and the request to support MOVING the task, but Planner only currently supports copying.