I recently bought an UA award ticket. Then due to an involuntary schedule change with the last segment, a phone agent managed to rebooked it to EVA Air to a slightly different destination, for free.
To exemplify, suppose my original itinerary is
ETKT 1
UAxxx AAA - BBB
UAyyy BBB - CCC
UAzzz CCC - DDD
Due to a schedule change for UAxxx and UAyyy, the agent rebooked the itinerary as
ETKT 1
UA111 AAA - BBB
UA222 BBB - CCC
UA333 CCC - DDD [INVOL EXCH]
ETKT 2
BR444 CCC - EEE
It seems that the agent invalidated UA333 (CCC-DDD), issued a new e-ticket (ETKT2) containing BR444 (CCC-EEE), and then chained the two e-tickets together into the same PNR.
However, it seems that while the ticket coupon status for UA111 (AAA-BBB) and UA222 (BBB-CCC) remained ADJUSTED (recall schedule change), the ticket coupon status for BR444 is BR CNTRL I.
Is this normal? Why does BR "control" that ticket coupon? What does the I mean?
Thanks, and I apologize for the (if naive) question because I am unfamiliar with exactly how bookings work.