Might seem counter intuitive but that's the intended behavior. Instead of looking at the order of values think of it as the angular velocity state associated with a rotation plane. Worth noting that q1q4, for example, refers to the rotation plane of the 1st and 4th dimensions.

5: q1q4 = 0.5, q2q3 = 1.0, rest = 0.0 5->4: q1q4 = 0.5, q2q3 = 1.0, rest = 0.0 4->3: We no longer have the q1q4 plane available therefore q2q3 = 1.0, rest = 0.0 3->4: Now we have the q1q4 plane back but the state has been cleared from previous interactions Going to a lower dimension essentially deletes previously set state of higher dimensional planes because they don't exist at that point.

When resetting it just goes back to the default configuration.