If you're on the ROF2 client, you just open up the item-inspection window, right-click the aug, and click destroy instead of remove. This will accomplish deleting the augment, but returning the item.  
 
 
Confirmed on my server which has most recent source that the 3 hardcoded ID's are working appropriately. 
 
Edit: It may be worthwhile to try another client like UF or something. Just in case it's related. 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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