Steps to export and import WCM libraries

Export:

1. Log in to the WAS Integration Solution Console using Administrator id.
2. Go to Resources>Resource Environment>Resource Environment Providers
3. Select WCM WCMConfigService > Custom Properties
4. Update/Create the property "export.libraryname". Set the value as string containing library names separated by semi colon.Example: export.libraryname=library_1;library_2;library_3
5. Go to directory /IBM/Websphere/wp_profile/ConfigEngine
6. Enter command ./ConfigEngine.sh export-wcm-data -DWasPassword=password -DPortalAdminPwd=password -Dexport.directory=/home/user/exportdir -Dexport.singledirectory=true

Transfer the file

1. Compress the above directory using the zip command: zip -r exportdir.zip /exportdir 
2. Transfer the zip file to the target server
3. Unzip it in some folder say /home/user/importdir

Import

1. Ensure target server does not have same libraries created in it. If present kindly delete
2. Go to /IBM/Websphere/wp_profile/ConfigEngine
3. Enter command ./ConfigEngine.sh import-wcm-data -DWasPassword=password -DPortalAdminPwd=password -Dimport.directory=/home/user/importdir

This is suitable for Initial setup of Environment where we need to transfer bulky contents. For further updates kindly use Syndication.

Refer Official source: http://www-10.lotus.com/ldd/portalwiki.nsf/xpDocViewer.xsp?lookupName=IBM+Web+Content+Manager+8+Product+Documentation#action=openDocument&res_title=Exporting_and_importing_a_web_content_library_wcm8&content=pdcontent&sa=true