When you install the latest version of Cognos 8,
most of the upgrade of existing models is done automatically. There
are some differences in what you must do depending on whether you
are upgrading a Cognos ReportNet model or a Cognos 8.1 or 8.2 model
.
The packages you published for your users are automatically upgraded in the Content Manager database. These packages continue to function as they did previously and all reports continue to run. Upgrading the model in Framework Manager is required only if you want to modify the metadata that you published.
If a model cannot upgrade successfully, reports that use the model will not run. You must then open the model in Framework Manager, upgrade it manually, and republish it.