CSV Combinations duplicity problem

[sistemeslinux]

In Prestashop 1.7 when you want to import combinations with CSV file, you don't have the opportunity to delete previus images. In prestashop 1.6 you can do it, but in 1.7 version you can't. When do you need to update stock of combinations, or change reference of a product, without this option, you must to delete all products, and start again uploading products and uploading combinations. If you don't do so, you will have all your images duplicated.

Is possible to implement this option that worked fine on 1.6 version? Thank you