Following the defeat of Nazi Germany in World War II, in 1945, the municipality passed to Poland under its Polish name Stare Warpno. After a few months, a minor territorial exchange was made between Poland and Germany, as a result of which the village became part of East Germany. From 1945 to 1952, Altwarp was part of the State of Mecklenburg-Vorpommern, from 1952 to 1990 of the Bezirk Neubrandenburg of East Germany and since 1990 again of Mecklenburg-Vorpommern.