From Manage Registrants > Edit Registration, when I try to change the quantity of the meal choice Add Ons Available section (from 1 to 2), it doesn't add a meal choice option menu which would state my 3 meal choice options to select from. Instead, it only adds another question to answer which is "Do you have any dietary restrictions?."
This situation occurs when the "Allow Multiple Quantities" check box has been checked and when it is not checked from the Registration Setup > Add-Ons > Edit Meal Choices window.