Is this JIRA Cloud or Server? If that's Cloud, than you could try https://marketplace.atlassian.com/plugins/com.sngtec.jira.cloud.exporter/cloud/overview - it can export custom fields. It depends on how Test Management stores test cases.
I'll look into it in a bit.
Please see the documentation for Test Management here: https://www.adaptavist.com/doco/display/TMFJC/Exporting+Test+Cases
If you need further assistance, please open a support case: https://productsupport.adaptavist.com/servicedesk/customer/portal/33
Please note, Adaptavist is closed until January 2nd due to the New Year's holiday.
Adaptavist Product Support
Hi Community! The Jira Service Desk marketing team is looking for customers who have successfully switched from Zendesk to Jira Service Desk! We’d love to hear your thoughts on the pros and ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs