Ive added a PNG image of a chart to my map and when i try to export as any image file or print the map the PNG image is not there. Im using arcmap 9.3. in layout view im adding image which ive tried as a jpg and png. it appears on the layout itself but once i print or export the map the image is no longer visible on the printout or export. Also, the image does not appear on the print preview. Ive added image files to many of my maps before so im not sure what would be causing this
I am not sure if this is the complete answer, but there seems to be a problem with GIF and PNG images that have transparent backgrounds not displaying or export/printing correctly in ArcGIS v9.x - 10
It is not really clear from the article if the entire image will not export properly, or just the transparent area. In some cases, what is supposed to be transparent shows up as black or some other color. I think your issue may be related to this if you happen to have a transparent background set on your chart.
If possible, I would try exporting the chart as an EMF graphic or remove the transparency on the background, as suggested in the article.