The sru_search() in SuperCat.pm does look like it tries to clear out old 852 tags before it generates new ones, so that covers sru and z39.50.
2078 $marc->delete_field($_) for ($marc->field('852')); # remove any legacy 852s
So it looks like those endpoints follow the same pattern as marc export.
The sru_search() in SuperCat.pm does look like it tries to clear out old 852 tags before it generates new ones, so that covers sru and z39.50.
2078 $marc-> delete_ field($ _) for ($marc- >field( '852')) ; # remove any legacy 852s
So it looks like those endpoints follow the same pattern as marc export.