This is really hard to test, because even with the ORDER BY id omitted, databases still normally, but not always, load the question_hint rows in order. I just suggest the following test: 1. Create a new quiz question (e.g. shortanswer) with two hints, hint 1 and hint 2. 2. Edit the question again, and ensure the hints are still in the right order after saving. The extraanswerfields bit does not affect any core question types. It only affects some third-party question types like the ones Jamie is working on. I suggest you assume that we have tested that sufficiently. The tests above that editing a standard qtype is not broken is sufficient.