Rubuta ci gaba don wannan sakin layi - Budapest ta sami 'yanci a watan Janairu da Fabrairu 1945. Grossmann ya zama memba na Kwamitin Rarraba Jiki na Yahudawa na Amurka da kuma co-shugaban Kungiyar Zionist ta Hungary. Ya zama darektan ofishin Budapest "Eretz-Israel". Ya kuma tsunduma cikin sake hadewar 'yan gudun hijirar da suka dawo da yawa ta hanyar kirkirar hadin gwiwar aikin gona 31 da kuma hadin gwiwar kasuwanci 50. Abin baƙin ciki, duk da haka, da shan kashi na National Socialism
bai kawo karshen nuna bambanci ba bisa kabilanci. 1940s sun kasance shekaru goma na ci gaba da tsabtace kabilanci a fadin yawancin Turai ta tsakiya. Matsalar yanzu ba wai Grossmann Bayahude ne ba, amma ya kasance mai magana da harshen Jamusanci. A cikin 1949 ya bar Hungary.