When duplicating tables or workbooks, only the header structure is copied - the data itself isn't transferred automatically. This is expected behavior, not a failure.
To preserve your data, use the "write to table" integration:
1. Click "Add Enrichment" in the top right corner
2. Search for "write to table" and select it
3. Map your existing data fields to the corresponding columns in your new table
This will transfer your data to the duplicated table structure.