We use Prestashop 18.104.22.168
We have an issue that may be a PS bug with regard to product update date in the DB.
What we need to happen is when there is a sale, for the sale date to be updated in the DB
product_shop -> date_upd.
At present the sale date does not get updated in product_shop -> date_upd
We use various modules to pull in orders from amazon, ebay, onBuy, Fruugo etc so I assume using a hook on order validation or something similar and then updating the DB.