I know this asked and answered a 1000 times, but want confirmation I've done it right and yes, I've looked at the earning charts.

Traveling AUS - DXB
Booked an iternary all marketed as KLM flights, though some of the flights are operated by Delta.
Fare class is N

According to the KLM earning chart on Delta.com I should earn 100% mileage, MQMs and be eligible for Medallion bonus miles.

N on Delta is a non-earning fare.

My understanding is that I should earn all the miles as the flights are coded as KLM flight #s as verifed in the fare details on my receipt.

Can the Diamond Desk verify or will they be confused b/c some of the flights are Delta operated?

If I screwed up, I'll find a reason to change the trip to a qualify fare class.

You should be fine. Since all of your flights are booked with KLM flight numbers, you will earn Sky Miles and MQMs on all flights, including ones operated by Delta, per the KLM Sky Miles earning chart. I just had the opposite case with two KLM flights booked with Delta flight numbers in S class. I received my correct miles and MQMs.

You'll be credited based on the Flight # and Class. So if all your flight numbers and class are KLM you'll be fine regardless of whose actual aircraft it is. Essentially you've booked a N class ticket with KLM and Delta will credit you as a N class ticket on KLM.