Originally Posted by
dkc192
If there's an a/c swap from Polaris back to IPTE, the system *should* auto-reassign GF seats to GS and 1K and restrict subsequent GF seat selection (in the event of any pax seeking to manually make changes after the swap) to GS and 1K, or at least that should be UA's intention. Now, who knows whether either of those happens in practice, particularly (and more importantly) the correct initial auto-reassignment.
It worked. I booked a (former) 3-class IPTE 772 and self-assigned 1A. Three days out it swapped for a Polarisized 772, and was automatically assigned 1A. A day later, it reverted to an IPTE, and was re-reassigned to 1A.