point to surface constraint slides

[koebrugge]

Hello,

I am trying to create a soft body dynamics simulation of the soleus muscle in the lower leg. Now, I have rigged the skeleton geometry and am animating the foot via a driver on a control rig. I have applied a general rubber preset to the muscle for now, and have applied point to surface constraint to the upper part of the soleus muscle with which I have no ploblems.
Please see the video below of what happens when I try to apply a point to surface constraint to the muscle and the calcaneus (heel). It seems to apply the constraint to a lower part of the foot? I use the default settings of the point to surface constraint.  I'm using maya 2018
Is this because the foot is already animated?

[koebrugge]

Hello,
I suspect it has something to do with the fact that I have not deleted the history of the soleus muscle. I deformed it before applying the ncloth node.
Am still trying it but this is my status right now, in case somebody has the same problem.