Actually, I just thought it was exp ped that causing the problem, later on I figured, even if I move Helix, signal drops and eventually stopped working. I actually have whole set list with 20 + presets and they were all working OK until last night. I was lucky enough to experience this problem on sound check and I had to remove 4CM and went straight to the amp. I had to bypass FX loop on all presets and snapshots before the gig.