Hello Brian,
Yes, background scanning is disabled in 9.8.2.0.15, but R700 customers can
enable ChannelFly for a period of hours or couple days, and then disable it again
to let your APs find a better channel, after building internal interference to channel
databases. Its this db updating that results in frequent channel changing at first,
but should settle down on better choice channels, since ChannelFly looks at more
than other SSIDs, but also RF interference from non-802.11 sources. You can
specify how long to run Channelfly and disable after X minutes, under the Access
Point Group configuration in 9.8.2.0.15. I'm doing some testing overnight to
confirm 9.9.0.0.205 behavior.