Originally Posted by
GinFizz
the folks at Propeller told me that they had wait-listed me for a seat in the CE cabin - and lo and behold (perhaps entirely by chance) I got the magic beep at the boarding gate.
No, this wasn't the waitlist clearing - your eTicket for that segment would still have been in K class. The ticket would have required a reissue following that segment being confirmed in I class in your reservation before you'd be eligible for travel in the I class cabin (without an OpUp, which is likely what happened).
If you look at your BAEC statement for that leg I'd imagine you got K class Tier Points and miles.