Directions for Extracting Gap File Records from your Horizon System

In order to extract a range of gap records you will have to convert the last extract date to Horizon format with the following SQL:

select datediff(dd, '01 Jan 1970', 'XXX')

Then you will need to use the following when you run the batch bib export using the  Horizon Catalog module [Select: File > Batch Bib Export]:
 

'XXX' is the number from the previous command.

You don't need to export item information with these gaps records.

Gap File Extraction Instructions