Unable to Edit VPI on Profile

I have a vertical geometry and want to move the VPI in the middle of the geometry up, increasing the incoming and exiting grade.  There seems to be no method to edit this.  Not able to do much at all with the vertical.  I can grip a few grippers but really have limited input to change the geometry to meet required grades and design parameters.  I attempted to drop the complex geometry down to separate elements but this also does not seem be possible. How do you get control of the vertical elements of the profile to make needed changes other than the limited edits that can be made by graphically stretching the grippers?  This is a triple compound curve and the VPI seem locked in place.

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