When you duplicate a table in Clay, only the header structure is copied - the data isn't transferred automatically. To preserve your data, use the "write to table" integration:
1. Click the "Add Enrichment" button in the top right corner
2. Search for "Write to Table" in the search bar
3. Select this integration
4. Map your existing data fields to the corresponding columns in your new table
This will transfer your data to the duplicated table.