Originally Posted by
4BandE
If a plane swap did occur, it should have been the exact same configuration with the swap occurring within the last couple of day (the last time I checked).
Unfortunately
should is a key word here. Swaps and swaps back happen all of the time and sometimes someone fat fingers something, or it looks like they'll need to pull a less desirable type and then it turns out the "correct" configuration is available after all; I've seen 757s turn into 767s; a 767 once became a 787, etc. A couple years ago I had a flight that for about 10 minutes looked like it had changed from a 737 to a 777 (on that particular route I'm pretty sure it would take longer to board a 777 than it would to take off and touch down) -- but it got fixed.
Unfortunately the fact is that any agent you'll actually be able to talk to likely doesn't have that much information about how the black box works.