Where are you importing from (i.e., what does it say in the library catalog field of the item(s) in question)? Do the items have a URL or DOI and if so could you provide a couple example ones?
how are you importing those items then? I believe the only way to get an empty library catalog is if you import from RIS or other metadata formats, in which case it's not really something we can address -- the * are in the imported data.
Do the items have a URL or DOI and if so could you provide a couple example ones?