By A Web Design
After exporting all the contents of your WordPress CMS into an xml file, which was is covered in the tutorial WordPress Export Content, you can now import the contents of the xml file into another WordPress CMS.
The following material will teach you how to import the xml file content of one WordPress CMS into another WordPress CMS.
To import posts, pages, and comments and so on, into a WordPress driven Blog, login to WordPress as administrator, by simply entering the url_of_your_website/wp-admin in your Browser. Enter the appropriate username and password {which was provided while installing WordPress} and then click on Log In as shown in Diagram 1.

Diagram 1
After logging in as WordPress Admin, a Dashboard page opens as shown in Diagram 2.
The Dashboard provides access to different WordPress functions and features.

Diagram 2
In the left menu, locate the link Tools. Click on Tools, from the drop down menu that appears click on Import as shown in Diagram 3.

Diagram 3
Click on WordPress to load the WordPress importer as shown in Diagram 4.

Diagram 4
Click on Browse as shown in Diagram 5, to choose an xml file to upload from your local computer.
NOTE: The xml file format is called as WordPress eXtended RSS ( WXR ).

Diagram 5
After clicking on the Browse Button a file navigator window opens. Navigate to the appropriate folder where the downloaded .xml file is, select and open the file as shown in Diagram 6.

Diagram 6
Click on Upload file and import as shown in Diagram 7, after browsing the file from the local computer.

Diagram 7
All page(s) and post(s) are bound to specific WordPress users. Hence, the Exported XML file will contain user information.
When the import process is executed, the import process will ask whether you want create a new user or assign the imported post(s) / page(s) to the existing user as shown in diagram 8.

Diagram 8

Diagram 9

Diagram 10
Congratulations!! You have successfully imported WordPress content as shown in Diagram 9.

Diagram 9
NOTE: Whenever you create a new user or import user(s), they will be assigned a “Subscriber” Role in WordPress. If you want to change the role assigned Go to Users and update the roles and passwords respectively.