Intercompany Transactions - Dynamics GP GL

I've previously created a number of DTS files that create GL Transaction Header and GL Transaction Line Dynamics GP adapter objects.


We now have a requirement to create intercompany GL transactions.


I have examined the data and can see that intercompany transactions are controlled by the TransactionHeader.ICTRX, TransactionHeader.ICDISTS and TransactionLine.INTERID fields. However, none of these are allowed for data links in the workbench.


Has anyone been able to successfully create intercompany transactions and, if so, how did you achieve this?