[CoursePress Pro] Questions mis-ordering themselves, causing exam submission to fail

I have several courses with many questions (I break these into several unit sections with 15 questions each for better usability). These were created by importing from json. The courses are basically fine, but the questions get slightly re-ordered. Sometimes they display in a different order in the back end than they do in the front end. I wouldn't care so much, but if the final question in the front end is not the actual final question, the exam will not submit. The page just reloads with no error messages or anything to aid the user.