My Game is playing on the Right Monitor, according to Action, it is Desktop 2. Taking a screenshot right now puts the picture on the left side and my Left Monitor isn't displayed at all:
http://i.imgur.com/p7mX5ar.png
Entire Desktop is the default for screenshot when in desktop mode. I wish I could start up my computer and leave Action in Desktop mode with it remembering to just take pictures of Desktop 2, but it will reset to Entire Desktop each startup. At any rate, the Entire Desktop feature doesn't work right.