Originally Posted by
MSPeconomist
Post changes, actual flight miles on "DL and partner" flights will be added to your MM number and used for MM qualification in the future.
Depending on how close to MM you are, you might want to consider a cheap premium cabin ticket (which now would earn more than 100% MQM) before the end of the year, especially now that 1MM gets "annual" GM status.
Or get a DL Platinum/Reserve Amex and charge $25/30k on it to IRS before 12/31/23 and get a full refund in March/24. This will give you 10k/15k MQMs without leaving your house. You also get full RDMs in addition to the MQMs.