You would still need to rename some field to match the other one in different tables, thats how View makes the association.
Since you don't want to rename the existing fields, you could copy and create a key for both of them, something like the below load statements:
Product_key as ProdLink,
Product_id as ProdLink,
This would maintain your original fields and create a link. You would be duplicating the data though.
Please don't post the same question multiple times. We can all see your first post in the General Overview. You can always bump your question if it drops off the general list.