Others wanted to go to British Mandate of Palestine soon to be the new state of Israel, especially after General Marian Spychalski signed a decree allowing Jews to leave Poland without visas or exit permits. In 1946–1947 Poland was the only Eastern Bloc country to allow free Jewish aliyah to Israel, without visas or exit permits.
: https://en.wikipedia.org/wiki/History_of_the_Jews_in_Poland