Some labeling has changed according to www.marc21.ca.
Hi Caroline, do you know that you can use translate https://translate.koha-community.org/fr_CA/marc21/ and download the files here: https://translate.koha-community.org/files/ ? :) The new YAML installer might also be an option, but if you have extra data compared to standard installer, this might work quicker for now.
This is now in the po files