I manage to figure out what the problem was.

admin/recover_cart_sales.php

line 471:
WHERE cba.products_id ='" . (int)$basket->fields['products_id'] . "'

They declared '$basket->fields['products_id']' as an integer but its
alphanumeric.

By removing the (int) part the attributes will show.

Solution:
line 471:
WHERE cba.products_id ='" . $basket->fields['products_id'] . "'