Many of our routers ppp interfaces show 'no data found' on the net flow home page.. yet if you click on the reports for that same interface there is up-to-date active data in them.  Also the date and time stamp for last incoming and outgoing details is current.  I have checked the monitor config and status on the routers and there are no error packets reported.  I have also tried restarting the flow collector service.

Any help is appreciated.

Thanks