Before
(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 785.00 2916.00)
  (backingStoreAttached 1)
  (children 1
    (GraphicsLayer
      (bounds 785.00 2916.00)
      (contentsOpaque 1)
      (backingStoreAttached 1)
      (children 3
        (GraphicsLayer
          (position 8.00 8.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 1)
        )
        (GraphicsLayer
          (position 8.00 1308.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 0)
        )
        (GraphicsLayer
          (position 8.00 2608.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 0)
        )
      )
    )
  )
)


After
(GraphicsLayer
  (anchor 0.00 0.00)
  (bounds 785.00 2916.00)
  (backingStoreAttached 1)
  (children 1
    (GraphicsLayer
      (bounds 785.00 2916.00)
      (contentsOpaque 1)
      (backingStoreAttached 1)
      (children 3
        (GraphicsLayer
          (position 8.00 8.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 0)
        )
        (GraphicsLayer
          (position 8.00 1308.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 0)
        )
        (GraphicsLayer
          (position 8.00 2608.00)
          (bounds 300.00 300.00)
          (drawsContent 1)
          (backingStoreAttached 1)
        )
      )
    )
  )
)
First layer.
Second layer.
Third layer.