The dialog box will display. Highlight the records you want to import. Click OK to import the selected records. When a record is imported, it displays with a new 035 field containing the OCLC number. You can then Save the record to the database.
Duplication checking occurs before a record is saved to the database.
In order to overlay an existing bibliographic record, the system looks for a match on the OCLC number in the 035 field. The same idea is true for overlaying an existing authority record.