A year after health officials throughout the U.S. were ordered by the feds to begin registering and tracking HIV-positive people with their real names—or risk losing federal funding—Montana health officials report good results and fewer errors.

The transition from using numerical codes to actual names has been controversial due to concerns about privacy, but Montana continues to protect the identities of the state’s 500 positive people when reporting data to the Centers for Disease Control and Prevention in Atlanta, a state official told the Bozeman Daily Chronicle.

As for errors in the old system, officials say there were occasional duplicates when the state used numbers.