If a court of law upholds a legal decision that has already been made, it decides that it was the correct decision. The crown court, however, upheld the magistrate's decision
keep or maintain in unaltered condition; cause to remain or last; "preserve the peace in the family"; "continue the family tradition"; "Carry on the old traditions"
If you uphold something such as a law, a principle, or a decision, you support and maintain it. Our policy has been to uphold the law upholding the artist's right to creative freedom