Instead of deporting important citizens and officials like during the Babylonian invasion of 597 BC (2 Kings 24:14), Nebuchadnezzar executed these leaders. He even had religious leaders killed.
Seraiah, the high priest, was killed. But his son Jehozadak was exiled (1 Chronicles 6:15). This allowed the priestly line to continue in captivity and later return to Jerusalem, starting in 538 BC (Ezra 1:1–2:20).