Thank you Kiaran for this response. I feel that I am getting closer to understanding this.
The root bone is set to pelvis in the IK 
I have set up a “Root Motion Generator” in the “Post Settings”
The scale translation in “root settings” is set to (1.0)
I am happy to say that this produces positive results within the retargeter.
But in the sequencer the target is still exactly 100x smaller than it should be.
In your previous message, you suggested a “Pin Bone” in the Post Op settings. How would I set this up and what settings do you recommend? I have tried every combination I can think of between the pelvis and the root without result.
Thank you again for you help.