Edit Customer SF -> M

Go to Magento Admin panel - Customer - All Customer - Add new customer

Select the Addresses tab and add Billing and Shipping address

Select Salesforce tab and click on Salesforce Contact Id link

Edit Contact and change First Name, Last Name, Email, Shipping and Billing address

Click Save Button

Click Sync with Magento - Send Data to Magento

Go to Magento Admin panel - Customer - All Customer - Edit Customer

Select the Account Information tab and check First Name, Last Name and Email were changed

Select the Addresses tab and check Billing and Shipping Address was changed