The thing about the chart is this: your browser will have image caching on usually to speed up website. This makes it so that you don't have to download the EM logo up top every time you visit, XYZ. The same applies to the chart.
If you click on the image, get image url, paste it in a new window and do a hard refresh (shift while hitting the refresh button) it will clear the cache and show the new image. Or else just disable caching on that page.
