Hard one to describe, but here goes....

I have a shared option, colour. I specify 30 colours.

I have a product that is available in 6 colours (white, black, red, green, blue, & yellow). so I assign it the 6 colours giving me 6 variants. The default colour is white.

I now want to change the default colour to black, so I edit the product, go to the Product Options tab and change the default colour option to black. But in fact the product now has 2 defaults (isDefaultChoice), black and green. This is confirmed in the database.

I have been trying to debug and I think the code is in the angular data binding.

On opening the product everything is fine and the original data is correct.

On choosing the new default colour the angular event fires and all is correct.

On clicking "Save" (for the product options), the data is initially fine until it hits the emitService code. It is after this code the $scope.dialogData.options becomes "corrupt" and you can see in the debugger that 2 colours have isDefaultChoice set to true.

    angular.module('merchello').controller('Merchello.ProductOption.Dialogs.ProductOptionEditController', ['$scope', 'eventsService', function($scope, eventsService) {
            $scope.visiblePanel = $scope.dialogData.sharedOptionEditor ? 'sharedoption' : 'newoption';
            var newName = 'merchNewProductOptionSave';
            var sharedEvent = 'merchSharedProductOptionSave';
            $scope.validate = function() {
                var validation = {
                    valid: false
                };
                if ($scope.visiblePanel === 'newoption') {
                    eventsService.emit(newName, validation);
                } else if ($scope.visiblePanel === 'sharedoption') {

// DATA IS OK HERE
                    eventsService.emit(sharedEvent, validation);
// DATA HAS 2 isDefaultChoice HERE

                }
                if (validation.valid) {
                    $scope.submit($scope.dialogData);
                }
            }
        }
        ]);

Not really sure where to look next. I have set break points on all relevant named variables and can't spot anything so am thinking/guessing it's Angular data binding???? Any pointers on where to look next.