If i recall correctly, you have the option to view the Gcode in Cura.
open the Gcode and look for a statement at the end of the line that looks like one of the following: "G0 Z15" or "G1 Z15"
Those two lines may have other things added to them, for example "G0 X2 Z15 F100".
If you delete that line it won't go up when its done printing. This isn't exactly elegant, but it should work for you until you figure out any configuration issue you have.