UPDATE ALL CHARTS
You have the ability to update all charts in a presentation at once, without having to open each chart individually.
You would select this option if you had made changes in your Preference Manager and wished to update all charts in your presentation to new preference choices, or if you had set a number of charts in your presentation to be optimized for dark slide backgrounds.
To do this, choose the Update All Charts button from the Mekko Graphics menu in PowerPoint. Choosing this button will proceed to go through each chart in your presentation and update it without you having to open each chart individually.
If you wish to update just one chart, you can right click on the chart in PowerPoint and choose Update Chart
Note: Update All Charts does not refresh the link to excel for slides which have links.