This Readme document contains late-breaking deployment issues.
Note: The Deployment Manager component is not used with IBM Cognos 8.
Look here for readme information about particular components:
The Readme document also contains information about
To see Readme updates and information about deploying IBM Cognos Business Intelligence products, go to the Cognos Software Services Web site (http://support.cognos.com).
When you redeploy a package from the source environment, any changes that you have made to the NewsIndex structure in the target environment will be overwritten by the structure from the source. This will occur regardless of the merge policy selected, Keep Target or Keep Source.
This situation has no workaround.