Can a solution pack be imported from one version of DLP software to another? For example, can a solution pack be imported from 8.1 to 9.0?
You can only import a solution pack into the same software version. For example, if you want to upgrade from 8.1 to 9.0, you would first have to install 8.1, install the solution pack, and then upgrade to 9.0.
You can only install a solution pack when there is no policy setup on a system, which is typically during a fresh install before policies are created. A solution pack needs to be imported immediately after installing the Enforce Server and before installing a detection server. If you are performing a single-tier installation, then you should import a solution pack immediately after the single-tier installation is complete.