Originally Posted by
irishguy28
I don't think this is a problem.
Last time I had a flight operated by Alitalia, with a KL number, and leaving FCO (which I think is the same situation as you) I was directed to the Alitalia website to check in, and wasn't in the end able to check in online at all.
Though I notice that
you said back in June that such flights were now OLCI-able on klm.com. (That quote of yours from June also suggests this is not the first time ever you've been directed to the AZ website).
Flight is operated by KLM; it is my usual flight and I always OLCI through the KL website.
I have been directed to the AZ website a few times when on AZ-operated flight (mostly also AZ-ticketed), but that has been a long time ago. The OLCI-able ticket in June was an AZ-operated flight with KL-ticket.
Anyway, I have a EC seat reserved for AMS-GRU so in worst case I get a middle seat FCO-AMS (I noticed ExpertFlyer shows 0 in Y / 3 in C so I may get lucky

)