[c-nsp] Netflow export from 6509

[Network]

I've got a 6509 with with a sup720 and pfc3, running native ios. I have been exporting netflow data to a remote collector but do not seem to be getting all the flows. All the documentation I could find on exporting netflow data on this platform relates to running CatOS, does anyone has any advice or can point to documents on how to properly set this up running native?

Thanks,