If you have the codes of the products you want, this is an effective way of ordering. If you wish to repeat the bulk of a previous order go to view orders and add it to your cart. If you need to make adjustments you can always remove any unwanted items at cart level.
When using this fom you must use the correct code otherwise when you submit, it will fail and you will need to hit the back button and find the dodgy code to continue. We will have this issue solved very soon in the meantime please take extra care to enter the correct codes.