Recently notice this, not just this folder but multiple one in sdcard/MUOS/info/catalogue (only this directory affected). I’m not sure what did I mess lead to this. The files inside these folder are identical, if I add a new file, both will have the same new file
Unsure of what may have happened here other than weird filesystem quirks. I would check the mSD card for any corruption and also plan ahead and make backups of your data.