diff --git a/main/preprocessing_dataset.py b/main/preprocessing_dataset.py
index dc9e897..c54283d 100644
--- a/main/preprocessing_dataset.py
+++ b/main/preprocessing_dataset.py
@@ -1186,6 +1186,10 @@ def main(dataset: str = typer.Argument("MAG", help="name of the dataset to be pr
         new_purchase = pd.read_parquet(f"{dataset_path}/diginetica/expert/data/purchases.pqt")
         new_purchase = new_purchase.rename(columns = {'userId': 'purchaser', 'sessionId': 'purchase_session'})
         new_purchase.to_parquet(f"{dataset_path}/diginetica/old/data/purchases.pqt")
+
+        old_product_name_token = pd.read_parquet(f"{dataset_path}/diginetica/expert/data/product_name_token.pqt")
+        old_product_name_token.to_parquet(f"{dataset_path}/diginetica/old/data/old_product_name_token.pqt")
+
         new_product = pd.read_parquet(f"{dataset_path}/diginetica/expert/data/products.pqt")
         new_product = duckdb.query("""
             SELECT np.itemId,