The graceful ZD (older model) to ZD (newer/larger model) would require that both models
of ZoneDirector can run the same firmware versions. Unfortunately, the ZD1000 can only run
as high as 9.3.4 code, while the ZD1200 is first supported in 9.9.
You have no alternative but to re-define your WLANs on the new ZD1200, but you may find
the Log Analyzer (Rowdy) available on our Support site, can help you read the ZD1000 WLAN
details, for you to recreate them on the ZD1200. I hope this is helpful.