invoice discount cannot retrieve the same discount type

Issue: Invoice discount not showing correct value

Scenario: After user set the invoice discount as AMOUNT (currency) then you re-edit the invoice, you will NOT getting as AMOUNT but PERCENTAGE %.

Impact: It will impact the discount amount and total amount.

Correct, we have the same issue here. When you edit an invoice, for no reason the DISCOUNT value switches to PERCENTAGE. This changes the total result with a different value which affects the invoice. The solution needed is to keep VALUE intact. This is obviously a bug, please help