I haven't used Pathway to do print a Classified Dictionary; I'm not sure it's possible... As a test I just selected Classified Dictionary view in FLEx, went File > Export and chose "Dictionary, Reversal Index" (the Pathway option), but still got a Configured Dictionary rather than a Classified one. It looks like the only way to print a Classified Dictionary is to use File > Export and choose "Classified Dictionary". This creates an XHTML file that can be opened in a browser (e.g., Firefox, Internet Explorer) and printed from there. There seems to be a fair bit of white space, however; mine went to 369 pages.
I'm just poking around for a solution, though. I'm sure there are others here who know more about this than me!
Paul