Are we talking transferring morphs between figures? Poser can do this right out of the box. It's called the cloth room. :) It's best to work from the High res to the low res (assuming the models are roughly the same size/shape to start)

Here's a good thing to try.

Load the High res figure into Poser
Load the low res figure into Poser
Set your animation frames to about 10
Move to frame 10 and apply the morph to your high res model
Move to the cloth room.
Create a new simulation (default settings should be fine - tweak if needed)
Make sure the number of frames in the calc equals that of the number of frames in your animation
Do NOT start from zero pose ( this usually causes probs)
Clothify the LOW RES model
Collide against the HI RES model
Edit Constrained Group  - ADD ALL (the entire low res mesh should show with red verts)
Calculate simulation.

To speed up the calculation, switch to outline mode before running the calc.

This should get you most of the way done. Some morphs may require clean up in areas like the eye or mouth that can be done in any modeling app.