message: Fix Creator V1 master
diff: @@ -50,6 +50,7 @@ Serializer.addClass(
  { name: "enableIf", visible: false },
  { name: "defaultValue", visible: false },
  { name: "correctAnswer", visible: false },
  + { name: "clearIfInvisible", visible: false },
  { name: "isRequired", visible: false, isSerializable: false },
  { name: "requiredErrorText", visible: false },
  { name: "readOnly", visible: false },
  