Hi Nicole, overlay is activated by default, you can deactivate it using one of the command line options. The documentation is a bit hidden at the bottom of the file: http://git.koha-community.org/gitweb/?p=koha.git;a=blob;f=misc/stage_file.pl... --no-replace overlay action for record: default is to replace extant with the imported record. Maybe do a quick test with a few records to check if it works as expected. Katrin From: Nicole Engard [mailto:nengard@gmail.com] Sent: Monday, June 24, 2013 3:12 PM To: Fischer, Katrin Cc: Bernardo Gonzalez Kriegel; Koha Subject: Re: [Koha] Importing MARC from the Command Line On Mon, Jun 24, 2013 at 5:12 AM, Fischer, Katrin <Katrin.Fischer@bsz-bw.de> wrote: stage_file.pl let's you specify the matching rule you want to use: --match <match_id> use this option to match records in the file with records already in the database for future overlay. If <match_id> isn't defined, a default MARC21 ISBN & title match rule will be applied for bib imports Katrin, That part I understood from the documentation, but what happens when a match is found? I want the record I'm importing to overlay the one on the system. But the documentation implies that the matching one I'm importing will be ignored. Nicole