I work with my development teams at an Epic level. I define epics, have my design team mock them up, and then they break the epics down into user stories that fit inside a single development iteration. That's how I prefer to work, and it's how they prefer to work.
I can do this manually right now by converting Aha-generated issues into Epics after I publish them, but it'd be nice if that step wasn't required.
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