Hi @RonanMahonArt, had a look at this. NGA plugin is doing some funky stuff to get their logic working. In their code, they are sending to the engine an EKeys::D key press when you press Alt + V (see function NGAInputProcessor::DupliNodeWithWire).
This kind of breaks anything that would be bound to Alt + D, like the case here. I don’t see an easy fix for this aside from rebinding the disconnect command to some other hotkey.