Allow stories to be split in the event that all tasks for the story are not completed in the iteration it was scheduled for. This will allow the team to receive credit for the completed tasks and the remainder can be moved to the next iteration.
Agreed. We feel that this is part of a missing iteration closure workflow in the current agile functionality. Common in other competitive applications is that the user has the option for the split portion to either be moved to the next (or selected) iteration or to the backlog.