As a Prokofiev scholar and authority, Nissman was invited by the Moscow State Conservatory under the perestroika initiative of Mikhail Gorbachev to travel to Moscow and collaborate with leading Soviet musicians on a detailed study of the Prokofiev manuscripts housed in the Central State Archives.
As a Prokofiev scholar and authority, Nissman visited the Moscow State Conservatory in 1984 as a guest of the Danish Embassy under the perestroika initiative of Mikhail Gorbachev. She joined with leading Soviet musicians on a detailed study of the Prokofiev manuscripts housed in the Central State Archives.