Joseph's non-technicolor Name

‘A new king arose over Egypt who did not know Joseph’ How could that possibly be Had not Joseph gone down in Egyptian history? He had ruled over Pharaoh’s land His prescient plan prevented famine Surely Joseph’s name had been preserved for remarkable deeds so deserved Ah, but Joseph’s name had been changed to ‘Tzafnas Pane’ach’ somehow rearranged Perhaps the new king knew Joseph’s Egyptian name ~ for which he deserves neither praise nor blame