I just set up a new JIRA automation, to pre-fill new JIRA ticket description with a template based on ticket type when a ticket is created.
Having created the automation and activated it, I thought I'd try it out, I created a new ticket and then opened it to see no pre-filled description, I then notice my JIRA slack channel has sent me a burst of several hundred messages indicating all existing tickets have been updated, replacing existing descriptions with the template content.
How do I bulk revert these unwanted automated changes, do I have to restore from a backup, assuming I have one?