Sales/Discount/Offer price

Would be nice to update the discount/offer/sale price (sale_price) instead of normal price (regular_price). For example plugin imports (vidaXL B2B price) price 80$, I set sale_price to 80$ and regular_price to 100$. If an update has occured the regular_price is set to 80$ and so the sale_price is removed because it is lower/same.