Restoring emails for a Parked domain

Following assumptions have been made in this case :
Parked domain : abc.com
New account : xyz.com ( Username=xyz)

1. Re-create all the email accounts after parking the domain abc.com on xyz.com.
2. There would be a folder named ‘abc.com’ under the new account at the following path :

/home/xyz/mail/

Replace that folder with the corresponding folder available in the original backup.