Treyarch says it has fixed the problems that resulted in leaderboard stats being reset in Call of Duty: Black Ops 2's multiplayer and Zombies modes.
"Leaderboards have been re-enabled and we'll be restoring entries for those impacted over the coming days," the studio said. "Thanks for your patience."
While affected players' combat records have still been showing the amount of time they've played, as well as their kill/death and win/loss ratios, these haven't been reflected in their leaderboard stats or placing.
Black Ops 2 held off competition from new entry Hitman Absolution to retain the top spot on the UK all formats chart earlier this week.