Loads of notices on import

Lots of notices on an import. I'm able to replicate on a vanilla install of Drupal using current release versions of quiz(7.x-4.0-rc1) and qq_import(7.x-1.1).

Notices are basically of two types:

Notice: Undefined property: stdClass::$add_directly in QuizQuestion->saveRelationships() (line 559 of /sites/all/modules/quiz/question_types/quiz_question/quiz_question.core.inc).

Notice: Undefined index: id in MultichoiceQuestion->saveNodeProperties() (line 177 of /sites/all/modules/quiz/question_types/multichoice/multichoice.classes.inc).