Hi Jakub, let's go through your entries once again:
Casina Vanvitelliana (1984): It isn't on the list. There is the Vanvitellian Aqueduct which is a part of the Caserta WHS.
Cortona - Piero della Franchesca (1984): We have it. http://www.worldheritagesite.org/sites/twhs.php?id=9728
Piazza Armerina : This is WHS Villa del Causale. It is included in the T-list as an example of restoration.
Turin: Only "il dimore sabaude" is meant, which is the Savoy monuments. Probably identical with the inscribed monuments within Turin, although the later Savoy WHS includes sites outside Turin as well.
Segesta: We already have this one.http://www.worldheritagesite.org/sites/twhs.php?id=9213Sacra di San Michele: Needs an update.
Bologna: The porticoes are all over the historic centre, therefore we assumed that the same area was meant.Rock cities of Puglia: I could only find some erased lines in the 1996 TWHS document relating to Puglia and including Altamura (now a separate TWHS). I guess this could be it, but would you have a source?
Portus Romae: Identical with former TWHS Ostia.
Monte Sant'Angelo and Via Sacra Langobardorum: Included in the Longobards WHS.
Spoleto and Tempietto sul Clitunno: In both cases (as well as Cividale di Friuli) the entire historical centre was meant to be nominated. Eventually only the Longobard components have been nominated.
I found another one we missed:Santuario rupestre di Olevano sul Tusciano (1996)
Spain:Dolmen de Valencia de Alcantara (2012): I have no access to the 2012 T-list. Could you provide a source?Cathedral de la Merced, Huelva (1985): I couldn't find it in the 1995 document. Could you provide a source?
Gaudi extension (2005): Needs to be updated.