Oskar von Hindenburg and his wife lived at Neudeck until the end of World War II, when they fled to Medingen in present-day Lower Saxony during the Evacuation of East Prussia in January 1945, shortly before their house was looted by Red Army soldiers and set on fire. Neudeck became part of the Republic of Poland according to the Potsdam Agreement of the same year. The ruins of the manor house were demolished around 1950.