Missing Actors from the name.basics.tsv.gz downloadable file

The last couple weeks I have noticed some actor names missing from the downloadable name.basics.tsv.gz  file from https://datasets.imdbws.com/ The "nm" numbers appear to be valid when I search for them manually in IMDB, they are just missing from the name.basics.tsv.gz file.  Here is a small sample:  Cynthia Nixon - nm0633223 Scott N Stevens - nm0828768 Glenn Fitzgerald - nm0280245 Jacqueline Murphy - nm0614319 Paul Majors - nm0538272 Wesam Keesh - nm3967234 Peter Salett - nm0974549 Kellee Stewart - nm1285540 Stephanie Charles - nm2569810 John Saint Ryan - nm0752631 Valiant Michael - nm4074525 Jessica J. Immanuel - nm7251520 Wilson Wood - nm0940089 Daryl Anthony Harper - nm2189290 Michael Toland - nm0865853 Jordan Theodore - nm7341946