I have a hierarchy that includes Initiative-Program Epic-Epic-Story-Sub-Task.
In the previous version (JIRA Live Plans) I was able to change the ranking of Epics within each Program Epic so as to move the Closed Items to the top of the display, with In Progress Items following them.
Now, it appears that I cannot do this. Some Closed Epics can be ranked higher than some In Progress items, and vice versa. I can find no documentation online about what limitations exist for the ranking of Epics.