The desktop editor stores the images used in your article in a temporary cache while you work on it. This article will show you how to locate the image files being displayed in the desktop article editor.
Right click on an image content block in the outline in the left column while holding down OPTION (OS X) or ALT (Windows) key
If you open the contextual menu for image content by right-clicking on the content in the outline that appears in the left column of the desktop editor while holding down the OPTION key on OS X or the ALT key on Windows a new option will be added to the menu. Select the Reveal Image File option to show the image file in Finder or Windows Explorer.