It seems to work or not work randomly after loading the save, I'm not sure what that means
Oh yes, recently I did investigation - why my multiloading stations load unwanted items when there is no condition for unloading from chests by miniloaders with logic. I spent around a week with this with no idea how this happens. But suddenly I discovered that items are unloading during save loading, and they are not unloading when miniloaders are in sight in savegame, only for distant miniloaders and it is hard to reproduce. But in all my 3 autosaves this happens. So I changed scheme and remove logic from miniloaders and add logic to belts.