Export your user.cfg from the sa6000 and import it into the sa2000. This will overwrite all settings configured in the user.cfg (realms, roles, resource policies, auth servers, and all the other non-unique settings). If you do XML, which is not recommended for this purpose, it will merge the two configurations. The system.cfg has more unique information in it and should NOT be imported between device families a la 6000 - 2000. It has your IPs, log settings, licenses, and certificates. If you need the sane certificates, import them via the system config option at System>Configuration>Certificates>Device Certificates>import
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