The Bible alludes to three different versions of the conquest/destruction of Shechem.The Jerubaal-Abimelech Finish Mop Heads cycle, the conquest of Shechem by Jacob, and the Dinah story.The (later) Jacob story overtook the (earlier) Jerubaal story, a phenomenon I dub tradition cannibalism, as Jerubaal became identified with Gideon and shed his own story.
When the idea of a conquering patriarch fell out of favor, the account dildo reemerged as the Dinah story, with Simeon and Levi as the conquerors of Shechem.