When Photoshop CS6 is invoked from PSE 11 Organizer why is a new file created with _edited-1 appende

I just converted a large PSE 10 catalog to work with a downloaded trial version of PSE 11.  When I brought up the Organizer and clicked on the Editor button I selected Photoshop CS 6.  At that point the Organizer created an image stack with a new file on the top of the stack that had a file name that was the original file name with "_edited-1" appended to the end of it.  Is there any way to avoid this?  For me it is going to create a tedious step to delete the original file and rename the new file after editing.  For probably 98% of my editing I will use only the Adobe Camera Raw editor on my imported raw files (Nikon's .nef).  ACR puts the editing data in a sidecar .xmp file so there's no need to protect the original file from be mistakenly replaced by an edited version.