Morgnshtern was repeatedly targeted by the Polish authorities; between 1929 and 1934, 23 local Morgnshtern branches were closed down. In 1937 Morgnshtern had prepared a delegation to take part in the Workers Olympics in Antwerp, Belgium, but the Polish government refused to give travel visas to the athletes. Morgnshtern ceased to function as Poland was occupied by Germany. Many of the athletes of the organisation became resistance fighters during the war. Morgnshtern was revived after the war. Warsaw "Jutrznia-Morgnshtern" is the only remaining Morgnshtern branch.