At the end of the war the University of Heidelberg was closed down while the Allies ensured that the Nazis were removed from the staff. Seifert was one of only a very few professors accepted by the Allies and he returned to the university when it reopened in 1946.
Sa katapusan ng digmaan sa University of Heidelberg ay sarado down habang ang mga Allies ensured na ang mga Nazis ay tinanggal mula sa mga kawani. Seifert ay isa lamang ng isang napaka-ilang professors tinanggap ng Allies at ibabalik siya sa unibersidad kapag ito reopened in 1946.