During the reign of Sennacherib's son, Esarhaddon, Šarru-lu-dari is mentioned alongside the pharaoh Necho I in several highly fragmented correspondences.
How and why this happened is not entirely clear, though given that Šarru-lu-dari was apparently collaborating with Necho I and is described as the governor of Pelusium during the reign of Ashurbanipal, it is possible that he was "reassigned" by Esarhaddon for whatever reason.
[3] During the reign of Esarhaddon's son Ashurbanipal, Šarru-lu-dari is listed among the Assyrian-appointed governors who fled their posts during the conquest of Egypt by the Nubian king Taharqa, where it is said he controlled the city of Ṣinu, which is probably Pelusium.
Afterwards, he, Necho, and another local ruler called Pa-qruru apparently entered into a treaty with Taharqa to split up the conquered lands amidst themselves, which Ashurbanipal saw as treason.
Šarru-lu-dari was thrown into prison, while Ashurbanipal "had mercy" on Necho, clothing him in extravagant robes and giving him precious metals and jewels.