Roadway Designer Profile Elevation not matching what was stored in the GPK File

An issue came in today that I think will benefit the community to see troubleshooting techniques as we work toward a resolution.

I am working on a 4 lane divided highway in corridor modeler/roadway designer. I have both widen and overlay as well as reconstruction sections of roadway. At one of the transitions from w&o to reconstruction, I start a design profile for the reconstruction section (which begins at existing ground), but the Roadway Designer's profile elevation at this transition point doesn't match the profile elevation I have stored in geopak. The result is the reconstruction roadway section in the corridor model (on one side of the interstate) being approx. 1' higher than the existing interstate elevation I am tying into. I am using superelevation and vertical/horizontal point controls. i have moved this transition point to a slightly different station and that seems to fix it. basically, I've run out of ideas to make the original station work for my model.