SO, here is what's happening: I have a Marshall DSL 20. I'm using the 4 Cable Method. In addition I want to control the amp's channel selection from the Helix, which I learned how to, using the Instant Controls from the Command Center. And I Mannaged to do that successfully, But When I hook up the cable going from the Ext Amp 1/4" out from the Helix to the F/S 1/4" jack on the amp I am able to switch the amp channels BUT every block after the "FX Loop block" ceases to work. The moment I disconnect that cable from de amp the effects after the "Fx Loop block" are recognised again...
I believe this happens because the amp's "footswitch-box" has 2 buttons: one for the channel selection and one that says FX Loop. And when I set everything up to control it from the Helix it seems to me that I'm only controling de channel selection but de FX Loop function gets disabled permanently by default... did I explained myself correctly? Please, I'd love to use the amp's dirty channel controlling it from the helix with the snapshots, but if I do that I lose every block after the FX Loop block... is there any way to fix this????
I uploaded a video on YouTube Showing this.... please watch to completely understand what's happening in case I wasn't clear in the description.