Currently when there is a task in a project, you can change the project it is associated with when it is in the current task list. But this is just for the one time. You cannot move a recurring task from one project to another on a permanent basis without re-setting it up. If on the task setup view, the project field was displayed, as it is on the current tasks view, and we could select from the dropdown, and move it permanently, that would be a very useful function.