Your question is Recovering a Failing Data Migration. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about a time you were involved in a challenging data migration where records were lost, duplicated, or mismatched after the move. How did you diagnose the issue, communicate the risk to stakeholders, and drive the migration to a reliable outcome?