We find it very useful to view the entire story map with stakeholders throughout the development process and even into release planning and beyond. This often helps frame context of discussions for new features by being able to hop back to items already done or in progress.
Currently in the new Aha! story map module when a feature is assigned to a release, it drops off the story map view. I had expected it to simply status that story and group it with the release. Then I expected that there would be filters that you could apply to the story map should you want to only review features in a particular release or even better, those stories not in a release yet so you could review with stakeholders for prioritization.
We currently use another story map product and although they have other features not in Aha! that we would be willing to live without, I can't envision using Aha!'s story map without the ability to maintain the map as you go.