1.) Go to Sales Order. Problem 1: Why the Unit Price column amount = empty after transfer? Cannot Edit because the transaction already transfered to SINV.
Upgrade to latest version (at least 270zi) .Go to sales invoice and delete the transaction.
Go Back to Sales Order,click any column and the u.price will appear.Save.
Create the S.Invoice again that transfer from the S. Order.
After upgrade, this problem wont happen again.