Purpose

How to restore Issue/s within your JIRA Application that have accidentally been deleted.

Resolution

To restore an issue you could try the following steps

JIRA 7.2.x+

1. Setup new clean JIRA instance, separate from your production environment as per Establishing staging server environments for JIRA applications.
2. Restore XML backup from before the issue was deleted. Automated backups can be found at <jira-home>/export.
3. Export the issue to CSV, as outlined here: Working with search results - Exporting your search results.
4. Import the CSV data containing your lost issue, following our documentation here: Importing data from CSV.

JIRA 7.1.x and earlier

1. Setup new clean JIRA instance, separate from your production environment as per Establishing staging server environments for JIRA applications.
2. Restore XML backup from before the issue was deleted. Automated backups can be found at <jira-home>/export.
3. Export the issue, as outlined here: Exporting Search Results to Excel
4. Convert the exported Excel to CSV
5. Import the CSV data containing your lost issue, following our documentation here: Importing data from CSV.

If you want to change the created and updated date for the imported issues, it would have to be done at the database level. The comments are stored in the table 'jiraaction'. Issues are stored in the table 'jiraissue', referencing the values in the column issueid.