FTP Bytes In count reset

I'm running a number of large file transfers i5 to i5 using FTP. So sitting on a NETSTAT screen I can see each active session with the number of bytes in on the target host. Every once in a while I'll refresh (F5) my screen and see how it's doing. But it seems that after a while the number of bytes in will drop. And it's not just one session, but all of them or at least the larger ones (a few gig transferred). It doesn't seem to be a restart and it's to big a drop it be a resend triggered by a bad block. But the overall run time seems OK. The SAVF on the target finishes OK and is not corrupt. The number of bytes is not hitting 9,999,... gig and wrapping the column field size.

Anyone seen this, any answers?










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