Ezekiel 30:26

“And I will scatter the Egyptians among the nations, and disperse them through the countries, and they will know that I am Yahweh.”

The importance of this comes out in the number of times it is repeated (Ezekiel 29:12; Ezekiel 30:23 compare Jeremiah 46:19). This was what had happened to Israel and Judah and therefore Egypt must outwardly suffer the same. It was not necessary however that it happen in the same way and to the same degree. It was the principle that was important. The war with Babylon would certainly result in refugees fleeing across the borders, and the armies may well have had to retreat into neighbouring allied countries before peace was made.