As part of my tests of NB6, i have downloaded headers from a certain group and even though i expected some of them to be grouped, it seems they are not.
What is the logic in grouping headers? I mean, NB seems to distinguish the filename when "show filenames" is checked, doesn't it group headers based on that filename and the similarity in the beginning of the header title? Does it need the whole title to be the same and only the final part (containing the filename and path numbers) to differ?