Restarting a Drag and Drop Quiz Slide

I have a drag and drop quiz slide that contains 4 objects on the left side of the screen that the learner must correctly place onto objects located on the right side of the screen.  I allow 2 attempts and ensure that the "Try Again" button sets slide to initial state upon revisit (btw that doesn't work).   I want the objects on the slide to automatically return to the left side of the screen when the learner clicks "Try Again".  How can I make that happen?