Partial fix for the Order Edit in 1.4.9.1 and 1.4.9.2

This is a partial fix for the Order Edit in 1.4.9.1 / 1.4.9.2

THIS FIX IS ADDED TO 1.4.9.3

I have placed it in the BUG section so it would be easy to find.

What does it do?
It will allow you to add or delete products and it will update the Subtotal, TAX and Total.
It will also recognize if a product is a Special even-tough it will not show the special price in the list (see image 1)
Image 1: The Macbook is on sale, it normally cost 500,- but as a Special it costs 450,-

What are the limitations?
It will NOT recognize Quantity Discount.
It will NOT let you change the payment nor the shipment method.
It will NOT let you change the Shipping costs.

ATTENTION!
The main thing to keep in mind is that you should NOT Edit orders if you have just changed the Order Totals in BO -> Extensions -> Order Totals.
This will mess up the order you just Edited.
You can ONLY edit orders that were placed with the same Order Totals set.

How to install?

Just copy the files in this download to you store.

Files to be replaced: 3

As always: BACKUP! BACKUP! BACKUP!


I specially want to thank one of our Forum Members who made this fix. THANKS!
I will not reveal his name as I do NOT want people asking him for help.

This mod is "as is".

Hi, I'm using Opencart 1.4.9.3.
I have a problem with special prices, when the order is placed by the customer it's correct, but when I edit the products, I can add only product with its real price.
Again, It would also be convenient to change shipping method and payment method..

thanks a lot