Why do not old corners be removed from the tables address, customer, orders and product?
This has been done to make it easier to make adjustments in cases where there are many visitors to the site and there is a need to make a cloned dataset for embezzlement.
Editing a new beta version of the updated store can take on your time when new customers and new orders will be traded live. Similarly, the status of open orders may have changed.
Some of the database tables need to be updated again before a new store can be moved to live mode. Upgrading your tables from your old cup to a new one is much better when outdated columns for old stores are not removed from the new database.