I am using Odoo 17

I have created a custom action button in "product.template" that when clicked triggers the "action_update_prices" method inside "sale.order" on all subscriptions that has the product attached in sale order line. Here is the code for it:


I have encountered one problem tho. Whenever i create invoice on a sale.order and then trigger the "action_update_prices" method again it sets all prices in the pricelist to 0 which means the unit price is set to 0 aswell.


I have tried to look through all models to see if i could find the code that handles this logic but i can't seem to find it.

What I want is basically just to make the "action_update_prices" method ignore the sale order having invoices or not so it has to work the same way as when the sale order has no invoices created

Hope it makes sense