I've got a backlog with sprints in, but this means that I can't create an issue on the board, only in the backlog. I know how to disable the backlog but I want to know what is going to happen to all the issues in sprints on the board (will they all stay on the board in the column they're in?), and all the issues in sprints in the backlog (will they move to the board in the to-do column?).