It's an open issue tracked here. https://jira.atlassian.com/browse/JSWSERVER-14746
Please see the comments, some people have suggested "Better excel plugin" . Otherwise you can make sure that Epic Name and Summary are same for the epic that way you won't miss the epic name field in the export.
i recently started using the Get Jira Data Excel add into import data from Jira. I have the Jira Cloud version. For having the name of the Epic on report i included the Epic Link.Name field.
Please upvote/accept the answer if you're satisfied with the response. Thanks!
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