Vortex Sound Research

Ive calibrated my Werkstatt and Keystep so that my 0Volt note is F1. Ive gotten it tuned with the Frequency Knob and then calibrated with the internal trim pot. Notes ate evenly spaced and musical. As soon as I detach the CV Expander to re attach the metal chassis, the settings seemingly disappear from the Werkstatt when I reconnect everything and I have to start the WHOLE process over?? It makes no sense. Very aggravated as I love this synth and its sound but it will NOT co operate with the Keystep properly.