Is it possible to convert our flows in files *.flw to format of NetFlow Analyzer?

Is it possible to convert our flows in files *.flw to format of NetFlow Analyzer?

Not long ago our company purchased Opmanager Opmanager, and now my authorities are thinking of purchasing NetFlow Analyzer. But the situation is as follows:
We have already used for the last year some free stuff - flow-tools. And all our traffic is gathered in these *.flw files.
Is it possible somehow to convert these files to Network Analyzer? May it's some kind of script or so on?
Thanks! 

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