As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7823 - GEG TO LAX - FLIGHT CREW REPORTED ATO NR 2 FUEL QTY INDICATION CHANGED VALUE AND GAVE FUEL IMBALANCE MSG WHEN THRUST LEVERS ADVANCED. AFTER RETURNING TO BLOCK FLIGHT CREW PERFORMED A SYSTEM REST AND RAN UP THE ENGINES AND FOUND NO PROBLEMS. NO W/U AND NO MX ACTION. A/C WAS RELEASED TO RETURN FOR SERVICE.