anchor.diff:            // Run acceptance function
             acceptImageSetChanges(base64Data, imgSetId);
           });
  +
  +        $('body').on('click', 'button[data-action="update-similar-images"]', function handleClick (evt) {
  +          // Find our image set container
  +          var btnEl = evt.target;
  +          var $imgSet = $(btnEl).closest('[data-image-set]');
  +          //- assert.strictEqual($imgSet.length, 1);
  +
  +          // Find our similar image sets
  +          var $similarImageSets = $imgSet.find('[data-similar-image-set]');
  +          //- assert.strictEqual($currentImg.length, 1);
  +
  +          // For each of our similar image sets
  +          $similarImageSets.each(function updateImageSet (i, similarImageSetEl) {
  +            // Move back to jQuery collection
  +            var $similarImageSet = $(similarImageSetEl);
  +            var similarImgSetId = $similarImageSet.data('similar-image-set');
  +
  +            // If the image set wasn't selected, then return
  +            if ($similarImageSet.find('[name=save_update]').prop('checked') !== true) {
  +              return;
  +            }
  +
  +            // Extract updated base64 content
  +            var $updatedRefCanvas = $similarImageSet.find('.updated-ref');
  +            //- assert.strictEqual($updatedRefCanvas.length, 1);
  +            var base64Data = $updatedRefCanvas[0].toDataURL('image/png');
  +
  +            // Run acceptance function
  +            //- updateImageSetChanges(base64Data, similarImgSetId);
  +            console.log(base64Data, similarImgSetId);
  +          });
  +        });
         });
   
       script.
  
positive.code:               currentImg: imageSetEl.querySelector('[data-compare-type=current]'),
                diffImg: imageSetEl.querySelector('[data-compare-type=diff]'),
                refImg: imageSetEl.querySelector('[data-compare-type=ref]'),
                humanName: imageSetEl.getAttribute('data-image-set')
              };
              if (imageSetEl === expectedImgSetEl) {
  
negative.code:                   D.TD({
                      style: 'vertical-align: top;'
                    }, [
                      D.INPUT({name: 'save_update', type: 'checkbox', checked: true})
                    ]),
                    D.TD({style: 'vertical-align: top;'}, [refImgClone]),
                    // TODO: Consider adding updated diff image here or placing overlay or muting non-overlay section
  