Is it possible to take a series of keyframes in the motion curve editor(as illustrated in the image) and move them all at once to a different height (parameter range), while still maintaining their current fluctuations relative to each other?

I tried selecting all of them, and moving them down to the range I want them, but it doesn't seem to work without evening out all the keyframe data to a straight spline frequency, or just moving one keyframe at a time.

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Tools :  3dsmax 2015, Daz Studio 4.6, PoserPro 2012, Blender v2.74

System: Pentium QuadCore i7, under Win 8, GeForce GTX 780 / 2GB GPU.