According to the author of the book of Kings, this verse means that the special priests carefully put the important chest called the ark of the covenant in its special spot inside the temple, where it would be safe under the wings of angel statues called cherubims. It's like putting something very precious in the safest and most sacred place they had.
1 Kings 8:6: And the priests brought in the ark of the covenant of the LORD unto his place, into the oracle of the house, to the most holy [place, even] under the wings of the cherubims.
This verse states that the priests brought in the ark of the covenant into the most holy place, which is similar to 1 Kings 8:6, rather than contradicting it.
2 Chronicles 5:7: And the priests brought in the ark of the covenant of the LORD unto his place, to the oracle of the house, into the most holy [place, even] under the wings of the cherubims: