Got it, thanks for the additional info. Changing the setting from Dual to Insert and back to Dual shouldn’t have any strange effects like this.

The Digital Delay algorithm is a true stereo delay, so the A channel will correspond to the left input/output (1) and B channel will correspond to the right input/output (2).

Is there a chance the your audio is panned to only send to channel 2?

What happens if you load a different delay algorithms, or the Diatonic or Crystals algorithm? Can you hear the A voice when a load another one of these stereo dual voice algorithms?