https://community.brightspace.com/s/article/KBL931001391

The question library is where you keep the myriad questions that you will use when creating assessments.

They can be moved from one course to another using the course import/export tool under course admin.

“Are you looking for a way to add a bank of questions to the Quiz Question Library? Look no further than this handy Quiz Question Converter- now available through the Brightspace Community on the Learning Center!”