In mid-November, I purchased a seat in Premium Select (for SEA-CDG) for a flight in mid-January and, with the seat map wide open at that time (because it was two months away) chose my favorite PS seat: a bulkhead window, in this case 20A (in an A330). There has been no change of equipment since then. I have made it a point to check the seat map every week or so to see if there are reasonable upgrade offers to D1. But when I checked the seat map today, I see I have been moved to 20C (bulkhead aisle in middle section). Granted, it's still a bulkhead, but really like bulkhead window.

What's up with this? Is there anything I can do about it other than hope that the 20A or 20J passenger gets upgraded and I can reclaim one of those seats? I thought that seat assignments, when confirmed, were confirmed. I suppose the one good thing that COULD happen is that the "center-center" seat, 20D, goes empty (it is unassigned as of today), and in that case I suppose I'd say a bulkhead aisle in the middle section with an empty adjacent seat is preferable to a bulkhead window. But I am not optimistic that this will happen. I've flown international PS about 10 times, and on every occasion, the PS cabin has been 100% occupied.