QTI 2.1 files not able to import into Item Banks, is anyone else having this issue?

We are having an issue with importing QTI 2.1 files with linked (or any for that matter) images into item banks in new quizzes. Before 11/9/22 we were able to successfully import QTI 2.1 files into...

Deleting a quiz with questions linked to an item bank

Once I have made an item bank from items in various quizzes Canvas.  What happens to the items IF I delete the original quiz where the items in the item bank were pulled from. If I delete th...