Import/export of products from a given list
I will provide a file in xls with SKU and prices
I need to: i) update products already in the platform ii) to export in xls those products that are not already in platform iii) to export in xls those products in platform that are not modified
In second phase: iv) after analysis about results of #ii I need to import/create new products on platform v) after analysis about results of #iii I need to switch off some products and put on yes a specific field on the platform.