Work subfilter for scrum boards

As a Scrum board user I'd like to see the issues in the sprint report even they got assigned to a version which does not fits the board's filter (unreleasedversions()) so I do not see empty sprint reports.

The whole thing happens in the ticket's afterlife, when the sprint is over, but it is regression tested, uploaded to live and finally assigned to an upload fixversion and the fixversion got released. Then it suddenly disappears from the sprint report.

A work subfilter (which is a kickass feature on the kanban board) would do the work.