Create a course in Moodle 2.1.
Create a quiz in it.
Create some multianswer questions and add them to the quiz. (See the docs page for some example question texts that you can copy.)
Attempt this quiz a few times as a student. Complete some attempts getting different scores. Leave some attempts open.
Backup this course.
Restore it as a new course.
Review the original and restored attempts side-by-side and verify that they look identical.
I need to implement recode_response for the multianswer qtype.