jquery reload function on dynamically scripts

Okay let's see if i can explain this correctly.

I have a sortable script being used on dynamically loaded elements.

The elements is being loaded with ajax from a controller php wich is including a another php file, and putting in the html like this:

function editPage(pageType, itemId) {

    $.ajax({
        type: 'POST',
        // TO DO
        url:  'controller.php',
        data: 'editPage=' + pageType + '&itemId=' + itemId,
        dataType: 'html',
        success: function(data) {

                $('#editpanel').html(data);
                $('#editpanel').fadeIn(700);
                $('body').addClass('activeEditor');  


        }
    });

}

And in this php file there a call to a function like this:

menuSortPlugin(<?php echo $_POST["itemId"] ?>);

with function looking like this:

function menuSortPlugin(menuId) {

        var group = $("ol.rowSort").sortable({
          group: 'rowSort',
          handle: 'i.icon-move',
          delay: 500,
          onDrop: function (item, container, _super) {
            var data = group.sortable("serialize").get();

            var jsonString = JSON.stringify(data, null, ' ');

            var menuId = $('#editpanel').find('ol.rowSort').attr('data-menuid');

            $('
').appendTo('#editpanel').fadeIn();
            _super(item, container);

            $.ajax({
                type: 'POST',
                // TO DO
                url:  'controller.php',
                data: 'sortRows=' + jsonString,
                dataType: 'html',
                success: function(data) {

                    $('.updating').fadeOut(function() {
                        $(this).remove();
                    });

                    alert(jsonString);
                    /* ditPage('blocks', menuId); */

                }
            })


          }
        }); 
   }

this is working great, and every time i drag a element the script is runned getting a alert looking like this.

[
 [
  {
   "moduleid": 171,
   "ordering": 2
  },
  {
   "moduleid": 170,
   "ordering": 1
  }
 ]
]

But when im clicking to load i new page, wich is loading the same php file but diffrent loaded content, the whole sortable function breaks and when draged the alert now look like this:

[
 {
  "sizzle1446644220102": {
   "parentNode": [
    9,
    0,
    true
   ]
  }
 }
]