Opened an invoice that had a date of 2/1/2021.  Moved the cursor to the invoice date field, hit T to change the date today, every non-inventory item on that list updated to the current price on the item list.  Looked at Audit Trail view and it says the same thing. Current customer has 0 price rules applied.  I checked that by opening the customer in the customer center and hit the show price rules button and being told "there are no price rules for: customer name".

Did the verify and rebuild.  Same problem.  Only way to make it work is to turn off advanced pricing, which is not a fix as it breaks other things. 

In the attached the only thing that has changed is the date.

When you change the date, the Base Rate changes which then forces the price each column to update.