This idea has been merged into another idea. To comment or vote on this idea, please visit APP-I-805 Sort features board.
Currently you can sort by rank on the Features -> List or Features -> Details page. However, there is no way to bulk modify the feature rank within a release to be numerically ordered by score. The rank field today is only editable through drag & drop on the features board.
The ability to sort features within a release by score and then apply that sort order as the feature rank within a release would allow teams managing large releases to quickly set the rank without manually drag & dropping many features.
This is especially important when integrating with JIRA since the Aha! rank can be submitted to JIRA to help guide the development team on prioritization through their sprint backlog.