Blaming a misguided policy approach for the steep fall in India's growth momentum, global investment bank Morgan Stanley has scaled down its fiscal year 2012-13 growth forecast to 5.8 per cent. The New York-headquartered bank had earlier projected India to grow at 6.3 per cent for the current fiscal.Chetan Ahya, chief economist for Asia Pacific at Morgan Stanley, said the much-talked about consumption story in the country is being su...