FIX: Change delete() to deleteFromStage() for EditableMultipleOptionF…

…ield::doPublish(). This fixes the issue where options were being removed from the draft table instead of the Live table, effectively deleting them from the CMS (#545)

code/model/editableformfields/EditableMultipleOptionField.php

@@ -95,7 +95,7 @@ public function doPublish($fromStage, $toStage, $createNewVersion = false)
 
         if ($live) {
             foreach ($live as $option) {
-                $option->delete();
+                $option->deleteFromStage('Live');
             }
         }