You can record the four tracks separately as dry signals (with FX only going to the Main outs if you configure it to do that in the settings) or else record each track individually with effects from the mains. There’s no way to record tracks with the FX included on each one. I hope that makes sense.
On the Digitone, you can decide what gets sent over USB to the main outs channel in Overbridge – so choose to route the three FX only. Then, in Overbridge within your DAW, you can set up four audio tracks to record/monitor each of the Digitone’s tracks without FX and then set up another audio channel to record/monitor the FX separately via the Main Outs. In fact, it’s quite flexible as you can always increase or decrease the volume of the FX track to taste later on.
It’s in this Route to Main section for patterns:
Or for global settings (the preferred option, I think):