Allow me to step in and help ensure the new price rule will come up on the invoice, PTP77.

There's a possibility that the effective date isn't set up today. You can open the price rule and check the Start date and End date.

Then, make changes to it when needed to ensure the new price rule is applied to the invoice. Here's how:

1. Go to Settings ⚙️ and then select All Lists.
2. Select Price Rules.
3. Find the price rule, then click Edit under Actions.
4. Modify the Start date and End date.
   
5. Click Update Rule.
6. Click Save and close.

Once done, create an invoice and check again the new price. 

Please get back to me for updates about applying the price rules concerns by commenting below. I'll be right here to always help you.