Gather Rotary Buffer Problem

I set Gather.Enable=3 and gather for a very long time (until Gather.Samples slightly exceeds Gather.MaxLines) and I have set Gather.MaxSamples=Gather.MaxLines.

Then I stop gathering by setting Gather.Enable=0

Then issued

sync

gather -u /var/ftp/gather/my.gat

sync

The file that is generated only includes just a small piece of the gathered data. I expected the file to have Gather.MaxLines number of lines but it has much less.

I set all my gathering addresses and types using the IDE plot tool initially.

Am I missing a step or the rotary buffer is broken?