Currently, if a Jira issue comment is created/edited; the event is not logged in the audit log. It'd be useful to have this event logged in the audit log.

Workaround

• Trigger automation rule: “Issue comment edited” trigger.
• Log audit action: {{now}}

Note: With the above approach the automation rule execution wouldn't be calculated towards your rule execution limit.

Alternatively, you can set up an automation rule using the “Issue comment edited” trigger. With smart values like {{comment.body}} and {}{{comment.latest.body}}, this can be captured before and after edits and further this information can be send out using send email or another system for tracking.