A simple addition to the right click menu in the Timeline.

Select a keyframe or more of either the hands feet or torso in the motion track and Ctrl+C then move to the desired timeline location and right click to "Paste to world location"

You want to keep a foot at the same location between poses?
Use Paste to world location.
You want to keep the hip at the same location between motion tracks?
Use Paste to world location.
You have 2 iMotions in a row but each one starts at a different location?
Use Paste to world location.