anchor.diff:                  }).map(function(r, i) {
                       Object.keys(r).map(function(key, j) {
                           if (r[key]) {
  -                            var prefix = (i + 1).toString() + "." + key + ".";
  +                            var prefix = (i + 1).toString() + "." + key;
                               var container = $('.repeatable-configurations').find('[data-index=' + i + ']').parent();
                               if (r[key]['@type'] === POLYGON_AREA_TYPE) {
                                   var rectangle = GETTERS.rectangleFromInput(container.find('.rectangle-editor'));
  
positive.code:                 return data;
              },
              serializeCircleToForm: function(prefix, circle) {
                  var data = {};
  
                  data[prefix + 'latitude'] = circle.latitude;
  
negative.code: 
          var UTILS = {
              serializeRectangleToForm: function(prefix, rect) {
                  prefix = prefix + ".";
                  var data = {};
  
                  data[prefix + '1.latitude'] = rect[0][0];
  