DOO - Prices List (USD) need to be converted to Rands (ZAR) in the SO

Summary:

I have South Africa BU. Currency Rands (ZAR).
The items we sell should be defined in USD (because there can be fix in time in this currency without variance)
I need to conver this prices from USD to ZAR in order to get the invoice from the Autoinvoice Import program in ZAR.

Ive already defined:
a. Price List (usd)
b. Price Strategy (usd)
c. Currency Convertion List (from usd to zar, gl sourced)

Enter Sales Order in usd and invoice was generated in usd too.
I am expecting to have a convertion to zar and get the invoice in zar.