What is advanced accounting in Intercompany Transaction flows

Hi,

I am working on setting up intercompany transactions for my client and want to know if my understanding on ' Advanced Accounting'check box feature on the transaction header. Can some one please help me withe the purpose of this check box.

My Understanding:

If  we enable the ' Advanced Accounting' check box, we can add an intermediate node between the starting and ending operating units and system will automatically create logical transactions in the intermediate node. These logical transaction will be used to generate intercompany invoices in the intermediate node.

We can't generate intercompany invoices in the intermediate node if it is an internal sales order flow between the starting and ending operating unit