DUPLICATING SMART OBJECTS
When you use the standard shortcut Command-J (PC: Ctrl-J) to duplicate a smart object, changes you make to the smart object will affect both copies. To avoid this, Control-click (PC: Right-click) on the smart object and choose New Smart Object Via Copy. Now the two smart objects can be edited separatelyâ”ideal for making two Camera Raw edits of the same RAW file.