Update: it has now been applied correctly and my students' scores have been updated.NOW -- can I fix it "permanently" by editing it and fixing it in the exam and in the item bank?Instructi...

Could not agree more. Just spent 4 hours correcting for that in a class of 400+ students. Ridiculous in deed. And not even pedagogically sound. 

After I posted my question, I stumbled across most of an answer here: https://community.canvaslms.com/t5/Instructor-Guide/How-do-I-regrade-an-assessment-question-in-New-Quizzes/ta-p/1293What it does n...

On a related note, I am trying simply to change what is the correct answer in a multiple choice question in New Quizzes (i.e., fix my mistake in my "answer key"), after my students have taken ...

What is the process by which I correct an incorrect answer in a multiple choice question in New Quiz after my students have taken the exam? As has always been the case, I do an item analysis of any ex...

Update: it has now been applied correctly and my students' scores have been updated.NOW -- can I fix it "permanently" by editing it and fixing it in the exam and in the item bank?Instructi...

On a related note, I am trying simply to change what is the correct answer in a multiple choice question in New Quizzes (i.e., fix my mistake in my "answer key"), after my students have taken ...

After I posted my question, I stumbled across most of an answer here: https://community.canvaslms.com/t5/Instructor-Guide/How-do-I-regrade-an-assessment-question-in-New-Quizzes/ta-p/1293What it does n...

What is the process by which I correct an incorrect answer in a multiple choice question in New Quiz after my students have taken the exam? As has always been the case, I do an item analysis of any ex...

Agreed! Also, it appears that you can't add questions from a new quiz to an item bank after you have given the quiz? Is this really true?