I have searched the forum for this issue and found something similar only from 2007.
I have a MUSIC directory on NAS. Under that MUSIC directory are 110 subdirectories named by ARTIST. Each ARTIST subdirectory has a variable number of subdirectories of ALBUMS with total albums under the MUSIC directory numbering approx 1,200. The ALBUMS subdirectories contain one or more of either DSD, FLAC, or WAV and may sometimes also include CUE files, and maybe artwork (jpg or the like). The total number of audio files is less than 10,000.
My import is configured to import only DSD, FLAC, and WAV. Upon import of the main MUSIC directory, MC skips some ARTIST directories completely and consistently. If I attempt import of the specific ARTIST directory, MC reports nothing new found and imports nothing. Using MC search shows nothing found for that artist.
An example of a skip directory: ARTIST subdirectory contains just one ALBUM subdirectory. That ALBUM subdirectory contains just two (2) files: 1 FLAC and 1 CUE with all names (ARTIST, ALBUM, CUE, FLAC) all length less than 16 characters. Characters are standard English keyboard characters. The file attributes on this FLAC file are identical to those of a successfully-imported FLAC file in another subdirectory.
Yet MC refuses to import. No error message. Just won't import.
Clues? Tips?