I am migrating an old database which includes asset tags for monitors. I
can match up the monitors discovered by ZAM with the old datbase by
serial number and I can see that any user-provided data should go into
the asset_alias field. However, for each monitor discovered by ZAM there
are generally two or three almost-identical entries in NC_COMPONENT (the
only difference is usually the key oid field).

Does anyone know if this is normal, and if so, why?

Can I remove the duplicates (probably would just create all sorts of
linking issues)? Or should I populate the asset tag into each entry and
filter via report?

Thanks in advance!