PQF on continious flight number with multiple stop
I have an upcoming reservation with single flight number for 3 distinct flights (lands 3 times on 3 distinct aircraft in 3 distinct airports), but my invoice from UA only shows 2 PQF for those flights. Original booking class is G, with a very cheap instant upgrade to F for all three segments. Any possibility that I can get 3 PQF if I call after I complete the flights?