Nokia need to stand up and take note of this, if they haven't already, but one of the commenters in the original article thread was absolutely right - it's possible for PC Suite to make a complete pig's ear out of the whole process and trash a document update by replacing the new version with the old one - it just happened to me.
Which is bizarre, as the first 10 syncs with 'File and folder' sync turned on were one way (PC to phone) and reliable - and then, for no reason whatsoever, the syncs started going the OTHER way. Resulting in at least one trashed new document version in my case.
So, please disregard my tutorial - I'll update it as and when Nokia fix this appallingly misleading and buggy feature!
Steve Litchfield