Commentators clarify that when Joseph named his son Manasseh (“causing to forget”), he wasn't erasing the memory of his family or his suffering. Instead, he was expressing gratitude that God had soothed the pain of his past. As one scholar puts it, he ceased to suffer from homesickness, allowing the joys of his new family to heal the wounds of his old one. His love for his father remained, but the sting of his toil was gone.