=== Current Data Status ===
Total items: 458
Items with null MRP: 239
Items with null retail: 202
Items with null cost: 155

This script will:
1. Convert null values to empty strings
2. Average range values (e.g., '110-120' becomes '115')
3. Keep invalid non-numeric values as empty strings

A backup will be created in backups before changes.
Continue? (y/N): Aborted.