You need to upgrade from Symantec Protection Engine (SPE) 7.5.x to SPE 8.2
Direct upgrade to SPE 8.2 is not supported. In most cases, the best course of action is to perform a fresh installation and review settings due to the significant changes between 7.5.x and 8.2. We recommend this course of action.
If upgrading and preserving your settings is necessary, you will need to migrate to SPE 7.9 first and then upgrade to SPE 8.2. The following instructions explain the steps to do this.
Upgrading a Single Server
Upgrading Multiple Servers
If there are conflicts between the cloud console and any local settings, the cloud console settings will be applied. If there are settings that are unavailable in the cloud console, then those settings will not be overwritten locally.