Normalized list of sites per CM's work and changed some locations (or at least those that have records associated with them):

725 H 1.54 m
726 H Loreius Tibertinus
727 H of 4 Styles
728 H of Caecilius Iucundus
729 H of Centaur
730 H of Centeniary
733 H of Faun. Pompeii
734 H of Garden Paintings
735 H of Menander, Pompeii
736 H of Mosaic Atrium. Herculaneum
737 H of the Fountain?
738 H of Tragic Poet
740 H of Triclinium
739 H of Triclinium (V.2.4)
741 H of Vettii
742 H of Wedding of Alexander, Pompeii
743 H. of Augustus, rm 15
744 H. of Faun
745 H. of Marine Venus. II.iii.3

become

1865 - Not set - notes:H 1.54 m (change the SLIDE record location to "Not set")
726 Pompeii (House of Loreius Tiburtinus)
727 Pompeii (House of the four styles)
728 Pompeii (House of Caecilius Iucundus)
729 Pompeii (House of the Centaur)
730 Pompeii (House of the Centenary)
733 delete - Pompeii (House of the Faun)
734 Pompeii (House of Garden Paintings)
735 Pompeii (House of Menander)
736 Herculaneum (House of mosaic atrium)
737 Pompeii (House of the Large Fountain)
738 Pompeii (House of the Tragic Poet)
740 Pompeii (House of Triclinium)
739 delete but put v.2.4 in notes - Pompeii (House of Triclinium (V.2.4)
741 Pompeii (House of the Vettii)
742 Pompeii (House of the Wedding of Alexander)
743 Pompeii (House of Augustus) - notes: rm 15
744 Pompeii (House of the Faun)
745 Pompeii (House of the Marine Venus) notes - II.iii.3

Some data seems a bit off. E.g. a search like this:
https://hcmc.uvic.ca/grs/mdb/search.php?q=&country=Greece&site=Avignon
Shows that certain images are connected to Greece, but the site is Avignon. I'm assuming we need to change at least some of these...