AUD: Supplier Costs Interface Audit layout question

Hi and thanks in advance, need a prompt advice.

AUD: Supplier Costs Interface Audit  report  (spawned by the PRC: Interface Supplier Costs)    is displaying the Invoice data  with 'break by' Amounts, we see the Invoice header repeatedly, why is that?

this is in a test instance with the Cummulative Release 7 applied, 12.1.3  version.  Our current version in Prod (also 12.1.3)  display one time the Invoice data then the list of  distr. lines.

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Vendor Name      Trx Type      Trx Number           Document Number   Trx Curr         Trx Total  Functional Total Trx Date
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Distribution                Functional Expend Item
Line Number   Trx Line Num      Amount Date        Project Number      Task Number       Expenditure Type          Accounting Date