Проверьте:
/script print(IsQuestFlaggedCompleted(10825))
/script print(IsQuestFlaggedCompleted(10829))
/script print(IsQuestFlaggedCompleted(10830))

/script print(IsQuestFlaggedCompleted(10989))
/script print(IsQuestFlaggedCompleted(10995))
/script print(IsQuestFlaggedCompleted(10996))
/script print(IsQuestFlaggedCompleted(10997))
/script print(IsQuestFlaggedCompleted(10998))
/script print(IsQuestFlaggedCompleted(11000))
/script print(IsQuestFlaggedCompleted(11009))