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+# Fixing an impacting issue in vtkImageDifference
+
+A impacting issue in vtkImageDifference has been fixed.
+Between vtk 9.1 and 9.2, an change has been made to vtkImageDifference
+that causes different image to be identified as not different
+depending on how the vtkImageDifference was configured.
+
+This fix may causes some testing to start failing.