Removed reload of table after dropping item

javascript/GridFieldSortableRows.js

@@ -32,7 +32,9 @@
 												}
 												
 												
-														gridField.reload({data: [
+												var form = gridField.closest('form'), 
+													focusedElName = gridField.find(':input:focus').attr('name'); // Save focused element for restoring after refresh
+												var ajaxOpts = {data: [
 																		{
 																			name: button.attr('name'),
 																			value: button.val()},
@@ -40,8 +42,25 @@
 																			name: 'Items',
 																			value: dataRows
 																		}
-																				]
-																			});
+																	]};
+												
+												ajaxOpts.data = ajaxOpts.data.concat(form.find(':input').serializeArray());
+												
+												// Include any GET parameters from the current URL, as the view state might depend on it.
+												// For example, a list prefiltered through external search criteria might be passed to GridField.
+												if(window.location.search) {
+													ajaxOpts.data = window.location.search.replace(/^\?/, '') + '&' + $.param(ajaxOpts.data);
+												}
+												
+												$.ajax($.extend({}, {
+													headers: {"X-Pjax" : 'CurrentField'},
+													type: "POST",
+													url: gridField.data('url'),
+													dataType: 'html',
+													error: function(e) {
+														alert(ss.i18n._t('GRIDFIELD.ERRORINTRANSACTION'));
+													}
+												}, ajaxOpts));
 											}
 										}).disableSelection();
 		},