I would like to know how I can filter on all issues with a particular epic link, and have both the resulting issues and their subtasks included in the results

[Bart Hoefman]

This question is in reference to Atlassian Documentation: Why do subtasks disappear when I filter my board using Epic Links

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[Daysha Consulting]

Hi

You can probably use ScriptRunner for this. 

There is an example here.

Thanks

Chris