PowerPoint: I edited my presentation using the Navigation pane, how can I make my changes visible in the table of content?

When you rename or delete an item with the Navigation pane, UpSlide records the changes internally, but does not launch an update, to avoid the small wait necessary to update divider slides, table of contents, and reminder shapes.

Once you are happy with your presentation, you will need to manually click the Update table of contents button to ensure that everything is up to date.