AR Receipt acounting ->How to seperate discount applied transaction amount and tax amount

Hi Team,

In the receipt print screen ->’Discount amount’ is applied transaction total including tax amount.

So when looked at receipt accounting entries, there is only one line created for class ‘Earned discount’, shouldn’t  be there one more seperate line for discount applied on Tax amount? This is non recoverable tax and will not be recovered from customer and should be hitting different account than ‘Earned discount’?

->Here entire discount amount is clubbed under one account . Ideally, discount applied on transaction amount should be hitting one account and discount on tax should be hitting other account.  

Please let me know if I am clear enough in my explanation.   Attached all print screens for AR Receipt and Transactions.