Please close this as was raised elsewhere.

The following error occurred when using the Imports Spaces functionality.

Import failed. Check your server logs for more information. com.atlassian.confluence.importexport.ImportExportException: Unable to complete import: Error while importing backup: not-null property references a null or transient value: com.atlassian.confluence.like.LikeEntity.content

Steps:
== Export the space ==
1. Go to Browse > Space Operations
2. Select XML Export
3. Select Custom Export
4. Uncheck Include Comments
5. Deselect All the pages
6. Select a group of pages
7. Select Export and download the file
== Change the space details ==
8. Edit the entities.xml and replace the old space name with the new space name
9. Edit the exportDescriptor.properties and replace the old space name with the new space name
== Import in the new space ==
1. Go to Browse > Confluence Admin
2. Select Import Spaces
3. Select the File to Import
4. Select Import (error occurs)