Intercompany price in billing document did not update when manually change it in SO (CE1908)

Hello ALL,

Recently I am testing intercompany sales order processing (1HO/1MX) and there would be no problem when following the standard process, which includes steps of creating condition record for PI01/PI02 (intercompany price), create SO, delivery issue and create F2 billing and IV billing document. Question is if I change the intecompany price manually in SO, the manual intercompany price's value (PI01/PI02) did not copy to billing document. The intercompany price is still the value maintained in condition record which means if I want to set intercompany price manually for a sales process, I will have to change three document's intercompany price - SO, F2 billing document and IV billing document.

So, I would like to know if there is some way to solve this issue?

Thanks,

Mas