Originally Posted by Lux Flyer

As said further up in the thread, all you need to do is ask for original routing credit and MQM will be credited as if you had still flown through MSP. Don't even need to do it on the phone, just go to the contact page, input your ticket/flight details and in the comments box explain that you "were rebooked due to IRROPs and would like original routing credit". Use that exact phrasing and give it a month (45 days) for it to make it through the system and you should see the flights credited properly. They've even given ORC when interlining me on United because they had no other options.