Prices from 1C are not uploaded to the site, what needs to be done?

Question

1C-Bitrix

The situation is as follows:
1. Put down the sale price in the item card, the price in the card was 15.70 (old price), set a new price of 17.00 rubles.
2. Made an exchange, but the price on the site has not changed.
3. Further, a day later, after the night exchange, the price returned to its previous state in my account - from 17.00 rubles to 15.70.
The problem is that the current prices on the site are not uploaded at all. What can be done about it?