Summary:

Jira Automation can currently sync new comments between original and cloned/linked issues using the "Issue Commented" trigger + "Comment on issue" action. However, there is no supported way to sync edited or deleted comments to the corresponding cloned/linked issue.

Expected behavior:
Jira Automation should provide a way to:

1. Map comments between linked/cloned issues (e.g., via a comment property or index).

1. Edit the matching comment on a cloned/linked issue when the original comment is edited.

1. Delete the matching comment on a cloned/linked issue when the original comment is deleted.

Current workaround:
None that is robust. A limited workaround exists for updating only the most recent comment, but it breaks for older comments and is not reliable for production use.