I looked at the feedback, and in this case you'll just have to leave a new feedback with the update. Given that the original is over a year ago, it is valid to stay. We only delete feedbacks if there is an actual error (duplicate, wrong category, etc).
But a year before a transaction is made right? The original stays, as we cannot edit it, and you can leave an update to it. That way everyone can see the timeline and facts clearly.