Hi! How to use "MARK modification templates" if you need to replace only a part? For example: 856 4 _uhttp://aeer.ru/files/io/m14/art_17.pdf need to get: 856 4 _uhttp://old.aeer.ru/files/io/m14/art_17.pdf https://koha-community.org/manual//24.11/en/html/cataloging.html#marc-modifi... Good Luck! Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru