CBQoS gpaphs disappears

CBQoS gpaphs disappears

Hello!
We are finally upgrading our license to version PLUS, and after several days of the use we have found one problem. CBQoS function graphs works very strange. After NFA starts everything works but after some hours a graph disappears and at screen displays �No data available�. If I restart netflow analyzer service after several minutes� graphs appears again. How solve this problem?

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