I just discovered this the other day and it does not seem fair:

Point A-DTW-Point B (OUTBOUND)

Point B-MSP-Point A (RETURN)

PerkSaver Available All Cabins 37,500 for Coach Class?

A return trip through MSP was considered an irregular routing. I don't understand why it matters? The trip is entirely domestic and Perksaver is avail in all cabins?

Anyone seen this happen to them?