Hi spfernandes, I think there's no way to desactivate the "Riff mode", but you can make a copy of the original pattern in USER STYLES, after with the intern pattern editor of the AUDYA you must copy all the arranger from C to D, after you can modificate this part D of the arranger with your own modification.

I send a modification of the @CHA_CHA_2 that had a [RIFF] in D.