Cannot directly copy and paste RRD graph from cacti to a Microsoft Office application

I used to be able to right-click on a cacti graph, copy the image, then simply paste into Outlook or Word.  However, I don't know why, but it stopped working. I did some research and found this post: http://forums.cacti.net/viewtopic.php?f=21&t=46420 stating that using Alt+Ctrl+V, then choosing "Device Independent Bitmap", it works.  It works.

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