Yes, cpl_pos_nodiscon is what you want to use.  

FYI, cpl_pos and cpl_pos_nodiscon are the actual property values.  cpl_pos includes both connected and disconnected matrices when calculating the area under the curve, whereas cpl_pos_nodiscon does not.  cpl_pos_numvalsAUC and cpl_pos_numvalsAUC_nodiscon are the the # of values that went into calculating the area under the curve for cpl_pos and cpl_pos_nodiscon, respectively.