Showing Morph Brush Breathing by Richard60 (renderosity.com)

I am pretty sure this the effect you are trying to achieve.  In the video link above I made a very quick morph and then applied it along the timeline about 1/3 strength otherwise it would show spikes etc. as this goes across several body parts. 
And it does not tear as in your pictures, since it leaves the body parts attached to the rest of the body.

And you can move to each frame and export the model as an obj for use where every else you seem to need to, and it will have the movement baked in.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13