Coming back to this old(ish) thread. I am experiencing a variation of the same issue here. Despite of the expression pedal make or model I seem to lose connection to the pedal when I switch snapshots. More precisely: I have set up 4 snapshots for a preset; clean, crunch, drive and lead. I added a volume pedal as a first block in the chain. I assigned the position parameter to follow the EXP1. I did this in snapshot 1. Everything works great. Then I switch to any other snapshot and HXFX no longer even recognized the EXP1 e.g. via the ”Learn” functionality. It does still work when I go back to the original Snapshot 1. But any other snapshot seems to lose connection with EXP1 completely. I have tried all the different global parameter options for EXP’s (Global, Preset, Snapshot) no no avail. Any ideas?