Going back on quiz resets answers

Hello everyone, I have been working on a project in Captivate for about a week and have been stumped by a quiz behavior. I have the playbar showing throughout my project. I have set the quiz to allow infinite attempts and the questions themselves to allow 1 attempt. No matter what I try, if a user answers a quiz question and then goes back with the back button on the playbar, it resets the quiz question so that they can submit their answer again - whether right or wrong on the first attempt. What I would like it to do is show their first answer and only reset if they click the "retake" button on the review slide. When I research this it seems like this should be how it behaves. Since it is allowing users to go back and submit new answers, they could for example, go back and answer only the last question and then get a new score based on that one answer, on the results slide. Help!