A. I don't see Amplitube actually on any of the tracks I'm looking at (even the problem track). I go into the plugin rack and every "Amplitube" style I pull up says "none" in all of the effects slots. (Side question: Does BIAB do anything other than DX effects?)

B. If it was an Amplitube issue, why would the problem show up only on "direct input" generated tracks? Wouldn't the problem be on the 'wet' track, not the 'dry' track?