Perhaps comments included in a part of Koha code available at https://git.koha-community.org/Koha-community/Koha/src/branch/master/C4/Charset.pm (starting on line 618) might help shed some light on the issue, although they focus on exporting data to UTF-8, not to MARC-8.
Perhaps comments included in a part of Koha code available at https:/ /git.koha- community. org/Koha- community/ Koha/src/ branch/ master/ C4/Charset. pm (starting on line 618) might help shed some light on the issue, although they focus on exporting data to UTF-8, not to MARC-8.