Migrating PO with Charge account in FBDI without overriding the TAB

Summary:

We want to Import the PO's with the Project attributes and Charge Account that is provided in the FBDI for both Expense and Inventory Destinations. Right now, while migrating the POs, the charge account is getting derived through the TAD. Is there a way to control this. We want the POs to be migrated with the charge account provided in the FBDI without the system overriding the Accounts or validating it from TAD.

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