Attributes - Groups Problem

[AndrewDps]

Hello, i've imported many Groups and Attributes with the Prestashop Manger and now i have a problem.

In the product page everything works and is shown perfectly.
In the cart page the Group name is not shown. Only the attribute name (See attached image).

How can i show the Group name in the cart? Maybe there is DB problem but i don't know where to look.
This error happens also with the classic theme. So it's not a theme problem.
If i create a new group with attributes in the backend, everything works fine.

A developer told me that:

Product page and cart page don't use same code to display attributes.

Product page use: {foreach from=$groups key=id_attribute_group item=group} + {$group_attribute.name}

Cart page use: {foreach from=$product.attributes key="attribute" item="value"} + {$value}

Thanks!