You can lock ProAnimator's camera to the After Effects 3D camera by turning on the Use Comp Camera checkbox. So the workflow would be to get the Boujou tracking data into AE and have the AE camera use that tracking data to define its motion. Then tell ProAnimator to use the AE camera and viola, you have the two linked together.
Unfortunately I don't know enough about Boujou to know how to get it's motion data into AE. Perhaps you know the anwer to that already. If not then a ? on the AE forum will take care of it.