[Chiuso] old sale prices in translation

Background of the issue:
I am trying to remove old sale products from the sale page on the translated pages. We have removed the sale price on the main page, and on the translated pages, the price is also removed. However, the products keep appearing on the sale page with the normal price. The issue can be seen here: link nascosto

Symptoms:
Old sale products are still appearing on the sale page with the normal price on the translated pages, even though the sale price has been removed.

Questions:
Why are old sale products still appearing on the sale page with the normal price on translated pages?
How can I ensure that only current sale products appear on the sale page in all languages?