Hi Jeff, what I did in XDSCONV is to mitigate the numerical difficulties associated with low h (called "Score" in XDSCONV output) values, and I removed the h < -4 cutoff. The more negative h becomes, the closer to zero is the resulting amplitude, so not applying a h cutoff makes sense (to me, anyway). XDSCONV still applies the I < -3*sigma cutoff, by default.
thanks, Kay