This is a known issue with QuickDraw GX 1.1.2, and will be addressed in the next major release of QuickDraw GX.
Workaround
Fortunately, there is a quick workaround for this problem. Follow these steps:
1. Start up with Extensions off.
2. Move the desktop printer icons to where you want them on the desktop.
3. Restart.
The desktop printers should remain where you have placed them.
This article was published in the "Information Alley":
Volume II, Issue 8, Page 12