Originally Posted by
xliioper
You will only get the 1.75x MQD accelerator bonus on the segments that were upgraded to C+. Not sure why you would expect them on the segments that weren't upgraded. MQD are awarded on a segment-by-segment basis, not a per-trip basis.
slayaboy paid to upgrade both segments. I assume that these two segments are the only segments in this direction (on the same fare component). So the 1.75 multiplier should apply to everything on the ticket (in that direction if it's a RT).