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After you have exported all the records, open Sirsi and go to the MARC Import section. The Source section is where you keep your dat file from OCLC. The destination section is what you call your export file for your reports. 
Once you have entered in the above information, click on the import button. You will be asked if the diskette is ready. Click yes. You will then be asked if there are any more files to upload. Click no.
Now open the Schedule New Reports section. Click on the Load Authority Records report and click open.