如何在不创建新记录的情况下更新cloudKit上的数据？

Here is what I am trying to do. I have a simple journaling app with two views: a tableView that lists the titles of the entries and a viewController that has a text field for a title, and a textView for the text body (and a save button to save to cloudKit). On the viewController, I hit save and the record is saved to cloudKit and also added to the tableView successfully. This is all good.Here is what I am trying to do. I have a simple