Is this a cannula track mark post BBL and how can I fix it? (photos)

Dear Ray,
Your pre-op pic has a bit of what you have post op, just less augmented. I do not feel it is a scar or cannula line, but rather an area that had multiple bands holding the skin down that still exists causing the area to be flat with the fat transferred to be puffy around it.
The issue is that sometimes releasing the bands during the procedure makes the skin so loose or elastic that it ends up being an outward bump which can look worse.
A small revision should make it better, but probably not round and smooth
Best wishes
Dr. Taranow

Liposuction Can always be used to change the shape. You should ask your plastic surgeon about this. Best of luck! Dr. Boschert