Originally Posted by
baker8
I remember him eventually saying something like "work with me here" and finally I mentioned discrepancy in taxes and refund -- at which he suddenly said I had 2 flights.
Haha, success.

Sounds like he needed you to give a "valid" reason and prompted the right one for you. Perhaps this should all go in our little book of tricks.
Originally Posted by
baker8
How do I know? I didn't get anything via email about change. Is there any way to tell from looking at flight info at nwa.com.
Yes, take your PNR (the 6-character confirmation code) and your last name and plug them into nwa.com on the lower right-hand box. When you pull up your reservation, look for the portion of it that is between BWI-GRR. Make sure the flight numbers are different on the BWI-DTW(?) and DTW(?)-GRR segments. If they aren't, then it will still most likely post as one segment and you should probably call again, this time citing taxes and a refund, or simply having them rebook you on flights with different flight numbers. If this happens, perhaps it's best to just ask them to route you through MSP instead since you'd already gone through this process and it didn't work the first time. There are no "direct" flights from BWI-MSP-GRR, so you should be safe if you get that.
Keep calling, keep escalating, etc. Write a TTU if it doesn't work. It should be a simple change that they should be happy to do since you need the credit for re-qualification.