1 Chronicles 7:29

And by the borders of the children of Manasseh, on the boundary, and within their possession, Beth-shean and her towns, Taanach and her towns, Megiddo and her towns, Dor and her towns. In these dwelt the children of Joseph, the son of Israel. It seems clear from this section that a part of the tribe of Ephraim, some time during the sojourn in Egypt, left the country, probably as a reprisal for the Philistine raid, and occupied some towns on the Philistine border.