Those units I thought recycled the $$$ when the bills are inserted by the customers. Basically if your inserted a $1 bill, the next bill out will be that one.
Okay bookkeeper here. That refill button only changes the amounts in cash tracking. It doesn't physically move the money anywhere. Please don't ever press any button in that menu, you will mess upup t bookkeepers paperwork.
The newer Toshiba robots do recycle, but not by pressing any magic buttons, they just do it on their own. We only have to press a button to get the money out of the machine.