Added queries to identify and sample records with default timestamp (1970-01-01 00:00:00) which resulted from invalid MySQL dates during migration. These records need date recovery from the MySQL source. Queries: - Count records with default timestamp in both tables - Sample first 10 records from rawdatacor with default timestamp These will help quantify the scope of date recovery work needed. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>