Vortex Sound Research

I have a Werkstatt from the new reissue done a year ago. It has a great sound and I am interested in using it only as a filter for external gear. However, I hear hhe VCO sounding through the VCF even when conecting an external input in the patchbay.

In the original Werkstatt , you could cut the connection in JMP57 to cut the VCO connection to the VCF. However, I haven't seen anyone mention this for the new reissue of the Werkstatt.

I tried reaching Moog but they never replied. Has anyone tried this with a new model?

Thanks in advance for your answers.