Parent message doesn't exist

Product Support Migration
7

Well, I added a couple of print debugs to map_first_post

def map_first_post(row)
  puts "Mapping parent #{row['msg_id']} #{row['subject'][0..40]}"
  mapped = map_post(row)
  mapped[:category] = category_id_from_imported_category_id(row['category'])
  mapped[:title] = row['subject'].strip[0...255]
  mapped
  puts "Mapped message #{row['msg_id']} #{row['subject'][0..40]}"
end  

def map_reply(row)
  parent = @lookup.topic_lookup_from_imported_post_id(row['in_reply_to'])
  if parent.blank?
    puts "Parent message #{row['in_reply_to']} doesn't exist. Skipping #{row['msg_id']}: #{row['subject'][0..40]}"
    return nil
  end

  mapped = map_post(row)
  mapped[:topic_id] = parent[:topic_id]
  mapped
end

These print ok and suggest the parent is mapped (imported?)

873 / 65936 ( 1.3%) [3895 items/min]
Mapping parent 9205270657.AB03850@ben.dciem.dnd.ca A CALL FOR HELP
Mapped message 9205270657.AB03850@ben.dciem.dnd.ca A CALL FOR HELP
874 / 65936 ( 1.3%) [3900 items/min]
Parent message 9205270657.AB03850@ben.dciem.dnd.ca doesn’t exist. Skipping 9206031720.AA22567@ben.dciem.dnd.ca: A CALL FOR HELP

So, don’t see why the parent is blank in map_reply. The only thing I note is that the numbers (873/874) are one less than rowid above.

But I don’t think I can go much further as I don’t know what @lookup.topic_lookup_from_imported_post_id is doing and it is very laborious to edit with vi and rerun the import, with each cycle taking around 30 minutes.