Summary

All of the automation rules can be exported in one go from Jira settings > System > Global Automation > ... > Export Rules.

For few instances, during export we see less number of rules exported when compared to total number of rules available in site. It can be recognised by comparing the count on the export screen: 

Environment

Jira cloud

Diagnosis

N/A

Cause

This happens if there are Jira Service Management projects available in Site. There are few rules that comes built-in with JSM projects which can't be exported. 

Solution

To identify which rules are excluded from export, a search can be run in Automation rule for label "System rule". The difference between total rules and exported rules will match the number of rules available with label "System rule"