(Bloomberg) A rising number of senior staff quitting Australia’s central bank may prove a “doubled-edged sword” for efforts to overhaul the institution — resulting in both an injection of new talent and a loss of corporate memory, according to former officials and economists.Most Read from BloombergJack Ma’s Clash With Beijing Costs Ant, Alibaba $850 BillionPowell Haunted by Repo Crisis as Fed Aims to Cut Balance SheetYellen Says US-China Ties on ‘Surer Footing’ After Beijing VisitMove Over D