If a library imports a file with items whose barcodes are duplicates of barcodes that already exist in the system (on different bibs/items - this is *not* for overlay/matching), the file will show as Imported but the items will not actually import, but there is no indication of that in 'Staged MARC record management'. The only way a library can know is to individually view each bib to see that the items did not come in. It would be helpful if there were an error message or note of some sort during the 'Staged' phase in 'Staged MARC record management' to indicate that items won't actually import, or at the 'Imported' phase to show that they didn't.