I can't change the currency wiht the transactions mekp

Hello Gurus,

I try to change the gross price and currency from USD to EUR. When I executed the transaction mekp, it changes the gross price but it doesn't change the old currency to new currency.

In a Change currency screen, only I complete the fields Old Currency, with a value USD, and New Currency, with a value EUR. Also, I try to change adding field Supplementary conditions.