After I put in all this time to create item banks, which I am understanding are associated with my account, not with my courses, what happens to them when I leave my current district and move to a different one?

Let's say that the new district uses Canvas, wouldn't I be getting a new account?  As I don't know of any way to download my current item banks, it seems I would be doomed to having to retype all the banks over again, which will be hugely painful given the huge number of questions I've created over the years.

Is there a way to move my item banks from my account to my old district to my account with a new district?