Ensure the Save checklist data ot Jira custom fields global setting is enabled.
Navigate to Project Settings > Automation (or Jira Settings > System > Automation rules).
Click Create rule.
Select the Issue transitioned trigger and the appropriate from and to statuses. Click Save.
Click New action and select Edit issue.
Select the Checklist Text field from the dropdown and provide the replacement, formatted, checklist items:
[] New list item oneClick Save.
Name the rule and click Turn it on.
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