Originally Posted by
GaryO3
Yes, if you get bumped and fly later (either on DL or another carrier) you can get original mileage credit by called customer service.
There have been reports that DL has become less accommodating about this than NW was. Both for missed segments (like the OP had) or reroutes. I'd be interested in recent reports of success or failure.
Unrelated question: How often are the flights between DTW and TOL oversold?