Sometimes we want to have a general look at a project. If you already split the cards on the releases, it's not as easy. We'd like to have a feature to look at the board where all the cards are in "unscheduled" section and clarify the stories. Then the releases could be turned on. If some cards would lost it's position, it's not a problem. Anyway it would be better than moving all the cards back to "unscheduled" manually, review it, and then schedule the releases again.