E- Commerce Migration of 50 Purchases and Customer Details latest X-Cart

We have 50 customers entries and 50 purchases entries which need to be transferred to latest X-Cart E-commerce site. ( current X-Cart Version 4.0 ) We will provide the information in an Excel Sheet and your team has to import it to current X-Cart database. ( X-Cart Version 5.2.13 - Latest ) Upon completion of project you will provide us with specific details on where the details are entered in the database. X-Cart knowledge or experience is preferred.