Index: content.migrate.inc
===================================================================
--- content.migrate.inc	(revision 949)
+++ content.migrate.inc	(working copy)
@@ -164,11 +164,11 @@
             $node->$field_name = array($delta => array($column => $value));
           }
         }
-      }
 
-      // Unset the dummy column value.
-      if (isset($node->$dummy_name)) {
-        unset($node->$dummy_name);
+        // Unset the dummy column value.
+        if (isset($node->$dummy_name)) {
+          unset($node->$dummy_name);
+        }
       }
     }
     // Handle defaulting of date "to" from "from"