There has been discussions here about copyright of poses and that relates to your question. Can you copyright dial settings and therebye restrict the usage of them for commercial purposes? If so, I would think that you must load the pose from the copyrighted pose file and keep it as is in the render for any copyright to be applicable. If you use a pose file as a starting point and then tweak it into your own pose, I would say that it's your pose to use as you want. To claim otherwise would be entering into an impossible discussion. How many dials do you have to change to make it an original pose? Impossible to answer.