It seems that the Tama S. Phillips Snare 12x5 Brush kit piece is missing from the BFD Modern Retro expansion pack. It's specified in the "CHREM Airy Brushes" preset, and all the brush toms, cymbals, and hi-hat are just fine. Just the snare is missing. I notice there hasn't been an update to the expansion pack since it was released. Can the brushed snare be made available? Thanks.
It's in the current download. It's not in the one I got shortly after it was released. They're both v18.104.22.168, but clearly it's been updated, because the timestamps in the one that's up now are newer than the version date.
So, bottom line, if you're buying new, you're fine. If you have an older installation where it's missing, download again and reinstall.