To prevent more bloodshed, the Most High intervened and ordered that the kingdoms stay far apart. The Israelites were not ready to reconcile with the Most High'. Abandoned by The Most High, the northern 9 tribes were invaded by the enemy then taken into captivity to Assyria. 2KING 17:18-34 . & 2KING 18:8-16 Jerusalem was under the control of the enemy who favored those who were not in power by allowing them to stay in town. The behavior of those who were not taking into captivity (Judah, Levi, Benjamin) was reproved by God who would like to send them to Babylon. Instead of repentance, they opted for Egypt. No further info in the Holy Bible allowing us to trace the northern nine tribes. However, on this matter, the Apocrypha is an excellent source.
It is a fascinating research in aiming to discover the hidden enigma around Edras'revelations which have a priceless value despite their rejection from the Bible.

Israel's Future
Divided into 12 tribes then subdivided into 2 kingdoms, The Israelites, following their deportation, will be eventually unified to receive The Most High's SON at His 2nd visit on earth as per Isaiah11's Revelations.
REV 2:9'S WARNING!!! "I know your oppression, and your poverty (but you are rich), and the blasphemy of those who say they are Jews... APOCRYPHA