My expectation is that parentEpic() should only return issues in the epic, not the epic itself.
I think, you can do the following to exclude the epics issuetype itself from the result:
project = JRA and parentEpic in (JRA-123, JRA-456) AND issuetpye not in (Epic)
that works, @Milan Chheda [INFOSYSTA], but I would hope that the behavior of parentEpic() can be fixed by Atlassian.
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