Импорт в opencart из csv

1/в цсв детали товара, стандартные поля скрипт уже импортит а вот с категориями по интереснее:

в цсв есть level description:

level description1

level description2

level description3

level description4

это и есть категории.

если level description4 пусто

а level description3 нет

то импортиить в 3ю категорию нужно которая дочерняя 2й категории и соответственно 2я дочерняя 1й

название каждой катеогории сответственно level descriptionХ

вот пример строки:

"Items Nom","Description","Inventory","Unit of Measure","List Price","Promotional Price","Net Weight","Status","LEVEL 1 CODE","LEVEL 1 DESCRIPTION","LEVEL 2 CODE","LEVEL 2 DESCRIPTION","LEVEL 3 CODE","LEVEL 3 DESCRIPTION","LEVEL 4 CODE","LEVEL 4 DESCRIPTION","LEVEL 5 CODE","LEVEL 5 DESCRIPTION","LEVEL 6 CODE","LEVEL 6 DESCRIPTION","LEVEL 7 CODE","LEVEL 7 DESCRIPTION","LEVEL 8 CODE","LEVEL 8 DESCRIPTION","LEVEL 9 CODE","LEVEL 9 DESCRIPTION","LEVEL 10 CODE","LEVEL 10 DESCRIPTION","Manufacturer Code","Manufacturer Description","Brand Code","Brand Description","Finish Code","Finish Description","Grade Code","Grade Description","Thickness Code","Thickness Description","BOMITEM","Extended Text"

"ADHAS002","Aedfosol afdesive 500ml can ","22","EACH","4","0","0.05","Cuwrrent","ADwwH","Adwwhewsives","STAFFIXT","Sta-fifsxt","","","","","","","","","","","","","","","","","","","SDFTA","Stsdddayfixt","","","","","","","No",

2/ есть изменения в шаблоне - по заинтересованоости тоже могу дать посмотреть фронт работы.