I am not 100% sure what your are asking, but I am going to assume it is the same problem I ran into a year or so ago. My interpretation is that when you create questions in a bank, you cannot see the outcomes that you created for the class. Is that correct? If so, read on because I had the same problem and after working with many people at Canvas they did not seem to know what was going on. This, I have learned, is normal.
Anyway, what I noticed was that if I created a quiz, and then created a question in the quiz, the outcomes for my class were available. If I tagged the question in the quiz with an outcome and moved it to a bank, the outcome remained attached to the question. How this works, and why Canvas has no idea why it works is a mystery, but I was able to convert about 1200 question and get them all tagged. Here are the steps I used:
1. Create a quiz and give it a suitable name - I teach chemistry, so my name might be "Ch02Q01-Naming Type 1 Ionic Compounds". I use a chapter and number so that I can sort them later.
2. Add questions to the quiz, one at a time, from the bank. DO NOT tell it to select X number, you must add each question, one at a time because this copies the question in to the quiz.
3. Delete the question from the bank. Yep, seems drastic, but you cannot edit questions in quizzes if they are in banks. So, after you make a copy in the quiz, you must delete the one in the bank. I recommend you run a test with one question and check that everything is working.
4. In the quiz, you should now be able to edit the question and add the outcomes from your class.
5. Once you are happy with the result, click the button to send the question to a bank. When I did this I made sure the new bank had a different name to the old bank so that I could keep track of things.
6. You should now be able to go to the bank and see the question and that it has the correct outcomes attached.
Moving Forward: What I do now is write all of my questions in an appropriately named Quiz and then copy it to a bank when it is tagged and done. I have even created a separate canvas course called "New Quizzes" where I write all of my questions.
I haven't done this conversion since summer 2021, so I am working from memory, but hopefully the steps are correct. It sounds tedious, and is, but once you get in to the swing you develop the muscle memory and can move pretty quick.
Paul