Unfortunately, you can not import and 8.x Database into 7.x. The recommended database save and restore process is as follows. Save your 7.x database prior to upgrading to 8.x. If you decide to revert to 7.x you will have that version of the datab...
The Help documentations provide a good description of the steps. At the large ? icon search 'checklist' and select topic "Extreme Management Center Initial Configuration Checklist".
1. Organize, add, and configure devices in Management Center.
