diff --git a/code/GridFieldOrderableRows.php b/code/GridFieldOrderableRows.php
index <HASH>..<HASH> 100755
--- a/code/GridFieldOrderableRows.php
+++ b/code/GridFieldOrderableRows.php
@@ -238,7 +238,25 @@ class GridFieldOrderableRows extends RequestHandler implements
 		$this->populateSortValues($items);

 

 		// Generate the current sort values.

-		$current = $items->map('ID', $field)->toArray();

+		if ($items instanceof ManyManyList) 

+		{

+			$current = array();

+			foreach ($items->toArray() as $record)

+			{

+				// NOTE: _SortColumn0 is the first ->sort() field

+				//		 used by SS when functions are detected in a SELECT

+				//	     or CASE WHEN.

+				if (isset($record->_SortColumn0)) {

+					$current[$record->ID] = $record->_SortColumn0;

+				} else {

+					$current[$record->ID] = $record->$field;

+				}

+			}

+		}

+		else

+		{

+			$current = $items->map('ID', $field)->toArray();

+		}

 

 		// Perform the actual re-ordering.

 		$this->reorderItems($list, $current, $ids);
Fix bug where the current sort value is pulled from the base table if the sortField has the same name when using ManyManyList