Or maybe it was something else... but I had an itinerary disappear for a while today (there was a minor schedule change, same flight #'s). Once back, all the seat assignments on flights after a partner flight were gone. When I tried to reinstate them, they would not stick. co.com support was able to get them to stick (after getting the itinerary back).

Also, when I first went in, all 4 seats (4 people on pnr) were gold (none deep blue), and one seat was different than shown in the itinerary. When I put it back it said the seat was already assigned, and everything switched to dark blue. The CSR (I was still on at this point) said that that pax was actually in the correct seat, which was why it said the seat was already taken).

Was today the new release of co.com?