ANYthing is possible on railways and ITsystems-just a week or 2 ago we had here many complaints/questions about exact reverse: 2nd cl pass and 2st cl seat=that gives more trouble. And ITalia in general is not well known in such matters. Do we really have to tell you that?

IF you are in ITaly for some time and this is not 1st trip into: I think its best to go to a counter (there may even be a special faster one for such honored clientele) and have them try to adapt it-expect a ´no possibile, scusi, signore´.

If its just the 3€ for an IC-forget it, and use seewulfs and others advice: book via oebb.at (NOT as seat only-but as ticket then add pass as discount).

For which train is this? Origin, destination, date, departure time.

In any case, you need to contact customer service to get this corrected. Mention your travel date since they use that to prioritise.

For next reservations for Italian day trains, use ÖBB: no booking fees, fewer bugs. Do NOT use the "Seat only” option but add the "Interrail / Eurail” option to all persons and then look for normal tickets.