The app allows you to create and manage sales easily. You may start, schedule sales, and disable the sales without any difficulties whenever you want. The app gives you full control of the behavior and sale prices.
When you enable the sale, the app saves the current prices to be able to restore them after the sale is over. Then the app applies the discount to the current price of the products.
If you change the product price that is on sale, please make sure to check and resolve the price conflict in the app settings. Otherwise, the price may not be accurate. The app can't decide what to do with your product prices for you but gives you full control and flexibility.
When the sale is over, the app restores the prices that were before the sale.