We have the same issue and I was hoping to find a resolution on this blog but appears there isn't one.  We could add condition to the RECSEL formula on the aging report to      else If {GACCDUDATE.AMTCUR_0 = 0 then 1 else xxxx

this would eliminate the zero value invoices to appear on the report however they would still display in the matching screen.

oh well....  glad others have the same nuisance.

:-/