News ACA’s local editions bow out in Perth and Adelaide as Seven’s Ian Ross says goodbye to Sydney November 29, 2009 12:02 by Tim Burrowes The Perth and Adelaide editions of A Current Affair bowed out on Friday night, while Seven newsreader Ian Ross bade farewell to Sydney viewers.. As Mumbrella reported last week, finances were behind the ACA decision. The local versions will be replaced by a national edition fronted by Tracy Grimshaw, who last week won a Walkley for her interviews for the show.Highlights of ACA Perth: ADVERTISEMENT Perth presenter Louise Momber bows out:Meanwhile, Seven newsreader Ian Ross tearily handed over the baton to Chris Bath for Seven’s evening news slot: ADVERTISEMENT