I need to be able to upgrade a few PDF computer files from Acrobat 5 or Acrobat 7 to the Acrobat 9 structure. The iFilter for searching on our web hosting server can manage the new structure or the old ones, but not both. Obviously, we want to keep the most current format; so, we need to upgrade the present PDF information from Acrobat 5 or 7 to Acrobat 9. Could you please explain whether or not there is a way to do this in Acrobat Pro 9? If there is a way, is there also a way to make it a set job? Any sort of help or suggestion will be much appreciated.