Originally Posted by
EsquireFlyer
Will I get PQD credit for the ~$600 paid to upfare to P using the Premium Cabin Upsell? The offer appeared on-screen immediately upon booking.
Typically not. Key fact bolded. The post-ticketing offers count as upfares and thus accrue PQD; the offers after booking but prior to ticketing usually count as a purchased upgrade.
But nothing is 100% certain with these things.