Custom fields from checkout on invoice

-- HikaShop version -- : 2.3.3
-- Joomla version -- : 2.5.27

We have a number of custom fields that show up for each cart item at checkout.
How can we add these custom fields to the order product table on checkout so they can be displayed on the invoices?

We have the custom fields but we are trying to write to them through php.
The customization we added is in the hikashop_cart_product table and we need to write those to the custom fields in the order table through php so that way they show up in the invoice. We just cannot figure out what id's to grab or what links the order table with the cart product table.

Also, is there a way to display items individually rather than combined in the cart view. Right now - Hikashop combines 2 same items as one with a quantity of 2. Can we explode this to show each item separated in the cart so our custom fields can be applied to both?

Here is a screenshot of the cart right now.

Nicolas,

We were able to get it to work with custom fields as you advised.

Still curious if there is a way to make items not group together at all in the cart. For example - If I add 2 of the same item, they appear as two individual items in the cart rather than one item with a quantity of 2.

I appreciate the help so far and really enjoy the product - very clean and expandable.

Let me rephrase - We need to separate the items in the cart instead of combining them by quantity. (ie. Product 12345, Product 12345 instead of Product 12345 Quantity 2) We just need to know what to change and where to change it. We are currently looking in “administrator/components/com_hikashop/classes/cart.php”. We have separate “Gift To” address custom fields for the items in the cart view and can not have them in the product listings. We are comfortable with PHP and making adjustments to the code - we are just uncertain where to look.

Nevermind - We found the on/off in the administrator/components/com_hikashop/classes/cart.php.

Thanks for the help with the custom fields!