Mysterious overlap

Disconnect one of the levers and check all operations. Then swap & check... report back.

Are you powering the 022s from one ZW, and the track from the other ZW? If so, it is possible that the plug you insert into the 022 switch is not actually opening the circuit between plug and track inside the 022. How pic from Olsen's CD is of some help.

FWIW, we had a related problem at out club. Our track was suddenly found connected to accessories bus power with constant 14V. The cause was a partially unplugged track switch aux power connector- such the pin was still making contact, but the cone plastic shape had pulled out and the spring contact was also touching the pin for track power.

Picture showing how the cone plastic outside of the plug springs back the track power contact

However, if it pulls out, there may be a point where the plug is still on the tip of the pin, but allows the track power contact to also make contact to the pin- bridging track power to aux power.

So yes, have seen this first hand.

We used some black cloth electrical tape to hopefully prevent the plugs from pulling out in the future causing the problem again.

One bank of switches is powered by ZW#1 and another by ZW#2.

Other levers on each ZW are for track power.

Rob, I had already tried to do what you have suggested.

I don’t think any harm is being done by having both levers on at the same time, but it just doesn’t feel right because they should work independently.