question–invoicing in dollars will eliminate all foreign exchange risk that PZK is exposed to answer= false reason given= may still be exposed to transaction risk on purchases
My previous post that you have linked to does not say that at all.
As far as the transaction risk is concerned, then invoicing customers in the home currency will eliminate the transaction risk on the sales. However it will obviously not eliminate the transaction risk on purchases (unless the supplier agrees to invoice in our currency).