Poland was moved to the west after the war. Land in the east became Russian and in the west, what had been Germany became Poland.
Russians took over homesteads in the east and those people uprooted moved into former German homesteads in the west when the Germans were expelled.
Expelled Germans, I know, were compensated by the new German government for the homesteads they were driven from in the new areas in Western Poland. They used those payouts to buy new homes in Germany.
It got nasty after German reunification when West Germans tried to get their homesteads in the former GDR back. There was a big rush to get to the US sector after the war and Germans were expelled, so lots of cases like that.
So, not necessarily a Jewish thing here. There were a lot of ethnic groups affected. Might as well close the chapter on it, from Poland's point of view.