I've been watching my upcoming LAX-HNL flight this Friday.

There has been R9/RN9 avail every day for the last 3 weeks. Even this morning.

Tonight, it is suddenly R0/RN0 - and seat map unchanged.

Unlikely United sold 9 F seats in 8 hours.

Do they just shut down RN/R space like that and give it to another fare bucket?