Hi Martin

> Will the internal CV automatically be bypassed if I plug something

into the CV1 jack on the A-110
Yes for newer moduls. As far as I remember the first series of A110s
(from 1996) did not use the normalling switch contact of the CV, but had
a soldered wire jumper (this jumper still exists in the later series,
but the socket contacts are no longer short connected).
If buy a used VCO, you should have a look at this. The version number is
printed on the pcb like "A110 VCO copyright 1997 V3" (upper half about
at the height of the tune potentiometer)

> Same question goes for internal gate. Will plugging something else into the gate jack on the A-140 ADSR bypass the internal gate for this module

yes.

Florian