It should not be a contradiction unless they are painful and/or swollen. When I learned cupping, we were taught to incorporate massage along with the cupping so I know that it is ok to massage over the cupping "hickies."
I don't know that I would want to get deep intense work right on top of one of the cupping marks?? But, I don't see where they would be a contraindication to massage in general.
Angie