We have Scriptrunner. I currently use this to filter on a list of all Issues linked to an Epic.
issueFunction in linkedIssuesOf("\"Epic Link\" = <Epic Name>")
Can I do similar to filter all Child Issues who's Parent Link is a deliverable?
issueFunction in linkedIssuesOf("\"Parent Link\" = <Parent Link Name>")
But it does not provide a full list of all the Child Issues belonging to that Parent.