Why is the Currency on the Internal Sales Order NOT in USD (base currency of destination org)

We are on EBS Version 12.2.9. We are in the process of implementing Internal Requisition / Internal Sales Order functionality. I followed the setups and steps provided in Doc ID 1384716.1.

Destination Organization is MD US OU, Warehouse is SVL, Base Currency is USD

Source Organization is MD CN OU, Warehouse is PRC, Base Currency is CNY

Please refer to the attached steps with screenshots. After completing the setup steps, I created and approved Internal Requisition in MD US OU, which is in USD, then submitted Create Internal Orders, then ran Order Import from MD CN OM responsibility for the requisition. The Internal Sales Order was created successfully in Entered status. However, the currency is CNY. I have a couple of questions.