2 Chronicles 17 says Jehoshaphat took away the high places. How can 20:33 say they were not taken away?

Of the start of his reign, 2 Chronicles says, "His heart was lifted up in the ways of the LORD. Furthermore, he took away the high places and the Asherah poles out of Judah" (17:6). At its close it says, "However the high places were not taken away, and the people had still not set their hearts on the God of their fathers" (20:33) (tap high places). 1 Kings says of him, "However, the high places were not taken away. The people still sacrificed and burned incense on the high places" (1 Kings 22:43). In Hebrew, took away (17:6) and taken away (20:33) are the same verb, sur. 2 Chronicles says something like it of his father Asa, who "took away the foreign altars and the high places" (14:3), while "the high places were not taken away out of Israel" (15:17); chapter 14's honest question sets those verses side by side, and chapter 17's sets 17:6 beside 20:33 as this one does. 20:33 also speaks of the people, who "had still not set their hearts on the God of their fathers" (20:33). In Hebrew, set their hearts is the same verb and noun as Jehu's words to Jehoshaphat, "have set your heart to seek God" (19:3). The Bible doesn't explain how 17:6 and 20:33 fit together, and these notes set them side by side without choosing.