Use an event bus to notify the second controller of changes that happened in the first controller and vice versa. Or even better, load the data onto the eventbus and both controllers can subscribe to that specific message and both will be updated.

See en.m.wikipedia.org/wiki/Publish%E2%80%93subscribe…

Why not save the needed data in a service? seems like your data should not be in a controller.

I think there was a confusion in my explanation, what i am looking for is -

ROUTE : /xyz

CONTROLLER :

...

    $scope.selected_data  = [{
        name: "hello",
        value : "world"
    }];

...

ROUTE : /abc

CONTROLLER :

...

    $scope.some_var  = "";

...

Now Imagine the case as, default route is /xyz and user is there he done some selection and now he jumped to /abc, if he comes back to /xyz he will loose his selection he did in /xyz as when he navigates between routes it reloads the controller, What i am looking for is a way form which i can disable reloading the controller while navigating with ui-rotuter.

Hope this clears what i meant! :)

service.setSelectedData();
service.getSelectedData();

  $scope.selectdata = function(obj) {
   service.setSelectedData(obj);
    $scope.selected_data = objl
 }
 $scope.selected_data  = service.getSelectedData();