Super weird.
I flew YVR-YUL-GRU-EZE-GRU-YUL-YOW.
The Accelerate credits have posted for GRU-EZE-GRU-YUL but not YVR-YUL-GRU.
I don't count the YUL-YOW, for whatever reason short hops to/from YOW always credit a week or more after the rest of the itinerary.