Presumably for 'business reasons' Fitch has withdrawn its credit ratings on Genworth Financial Inc., and all of its mortgage insurance operations, including those in Australia. Only in the last month, Fitch had completed a round of downgrades to various tranches of Australian RMBS due to cutting Genworth Australia's insurer financial strength rating to 'AA-' from 'AA'. Fitch subsequently said the withdrawal of Genworth's ratings will not affect the ratings of Australian and New Zealand RMBS as it will maintain an internal assessment of Genworth to support is ratings of RMBS.