Importing Intercompany Transactions with Tax lines

Import IC Transaction from External Applications Including Tax Lines

We have a requirement where IC Transactions are created externally including tax lines & need to be imported in Fusion IC module using fbdi template. Few questions in that context
Can we incorporate IC batch with base amount + Tax Amount like 2 seperate line items in the IC Batch & import ? Ideally the IC batch after import, whould show the base amount line + Tax line seperately ?If this is not supported, then what would be the approach to import IC batches from external application, where tax has already been calculated ?
Any insight is appreciated.