Ibn Ezra on Numbers 33:1

אלה מסעי. כאשר חנו בני ישראל בערבות מואב וישבו שם חדשים עד שבנו הערים הנזכרים ולא זזו משם כי אם אחרי מות אהרן כתב משה כל המסעים: THESE ARE THE STAGES. Moses recorded all the journeys of the Israelites when the children of Israel camped in the plains of Moab¹Verse 48. and stayed there for a number of months, until the afore-mentioned cities²The cities mentioned in Num. 32:33-42. were built. They did not move from there until Aaron died.³This appears to be an error, for Aaron died at Mount Hor before Israel came to the plains of Moab. See Num. 20:22-29. The proper reading should be, until Moses died.