OK so you're saying I misunderstood, I can't delete the old pages to make room
for more.  Correct?
What if I were to empty the files instead of deleting them (while preserving
the created and modified date/time stamps on the files), does HTTrack check if
the size changed as well?  Or might I be able to work around the issue this
way?
Other thoughts about how I could free up the space used by these pages without
interfering with HTTrack's progress?
Kind regards,
--appyface