Diagnose agent drift symptoms

Six months ago, HealthTech launched a Benefits Assistant agent. Initially it worked well, but HR now receives frequent complaints:

• The agent still mentions "2024 enrollment deadlines"
• Employees get inconsistent answers about health insurance depending on how they phrase questions
• The agent routes parental leave questions to managers instead of HR (incorrect per policy)

Your task is to use AI to help diagnose what went wrong and identify which maintenance practices were likely neglected.