I've just seen an entire thread on issues regarding DL interpreting the first letter of the fare basis code as the booking code for crediting AM flights, which seems to be a problem when one has to manually request for credit.

So this has me concerned: I've searched on the ITA Matrix for my upcoming mileage run on VS: JFK-LHR-JNB on an Economy Delight (V) fare (also indicated on all 4 segments on the reservation page) which earns me about 25% MQDs and 125% MQMs, the fare basis code for the outbound is "NKRP0SCN" and inbound "OKRP0SCN." I really hate to see if it's interpreted as an (N) and (O) fare, which only earns 5% MQDs.

I've checked the business fare (I) on VS on another flight, and it corresponds to the first letter of the fare basis code. This inconsistency adds more to my concern.

So just inquiring anyone's experiences regarding postings from VS flights, especially if DL credits VS flights in the wrong booking class or no automatic postings at all, specifically in Economy Delight. I've experienced both of these from Aeromexico when booked on an (I) fare but credited as an (N) fare as it is the first letter of the fare basis code, and I don't want to go through the same struggle with Virgin Atlantic again.