[Pan-users] Get new Headers?

[fred]

Hey Guys

I may be a little confused about get new headers in selected groups. I 
thought that it meant get all the headers that are newer than my current 
newest header. When I got new headers in selected groups I jump from 
Sept 20 to Sept 28 with no headers in between (yes there are posts which 
should be there). I am running 0.114 with patch 3. So what happened 
(guesses are ok) and how do I fill in the missing headers without 
getting all the headers?(large group)

Thanks
Lazlow