Hi Rebecca.
Further to this discussion I have added to the "public" questionnaires the "original course" and "copy course(s)" information on the Index page of the Activities block for the Questionnaire activity.
See Questionnaire_index_view for all the details.
I have also inserted this information in the questionnaire editing page, see Setting_up_a_questionnaire#Public_questionnaire_roll_out_to_multiple_courses.
At the moment this change is only available for version 2.6 downloaded from our github. I'm hoping to make it available from the Moodle official plugins repository any time soon.
Joseph