How to manage Purchase/sales prices priority in Dynamics 365?

Dynamics 365 / AX 2012 have multiple functionality in prices like sales/purchase agreement -price and discount journal-latest sales / purchase price - copy from anther order - manual)

today we discuss priority for this functionality

firstly, you can copy sales /purchase order from anther with the same price and discounts , in this case no priority applied

priority for prices as the following

1-purchase agreement
2-price and discount journal
3-latest sales / purchase price
4-manual

let me start our scenario

we applied purchase agreement /price journal/latest purchase price for item M0001 and vendor 1001

 we create purchase agreement for item M0001 and vendor 1001as the bellow
 puchase price 10 USD

also we create price journal for purchase as the below

purchase price 15 USD

and item M0001 tricked as the latest purchase price and price 3.85 USD

now , we will release order from agreement

purchase released with price 10 USD

 now , we will create new purchase order but not related to purchase agreement
purchase price retrieved from price and discount journal not latest purchase price with 15 USD