Missing track

[beckphotonik]

I have now found more invisible tracks. They are all large WAV files 1.9GB+. They all appear in folder view but the tags have not been read, only the filename is displayed and they play from folder view.
I use Metadatics on my Macs to do the file editing, I edit my master library on an SSD then sync to the Melco. This procedure has worked fine for years.
I think there may be a connection with the MinimServer refresh as similar sized WAV files that have not been updated recently are visible but my recent edits are not, I can't believe adding a LABEL tag would cause this.
Full filename: Internal/Music/Classical/Albums/Channel Classics/DXD/37119 Tchaikovsky Arensky/6_Chamber-Symphony-Moderato_stereoDXD.wav