I think this really depends on what format you need the export to be in. You can use a filter to find all the issues you want to export and then click on the "export" button on the top right of the Filters view and choose the appropriate export format which includes XML, CSV, HTML with either all the columns in the issue or just the displayed columns in the filter.
XML will give you the most amount of data from the issue including the workflows, customfield ids, and project information. Make sure you aren't in the issue itself, and using the Export from the Filter's results. I've circled the export button in the image below:
Hey Community mates! Claire here from the Software Product Marketing team. We all know software development changes rapidly, and it's often tough to keep up. But from our research, we've found the h...
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