United 531 divert/emergency desent 4/21

flightaware.com/live/flight/UAL5 … /KORD/KSEA

They apparently diverted to RST due to smoke in the cabin… but I can’t find the altitude tracklog… I know someone that was on that flight and while they were on the ground he did grab it - 1:37PM @ FL380, then 1:47@ 3100 ft. Did the tracklog get expunged because the aircraft didn’t get arrived properly?