Is this JIRA Cloud or Server? If it's the former, I may be able to help with Advanced Export plugin, which I just released.
It doesn't have this functionality at the moment as it's not a very popular request, but I could add it it that was of help to you.
It would work as a 'virtual field' which would be exported to CSV.
I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...
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