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One option is to take the latest translations from https://folio-testingsnapshot.dev.folio.org/, another option is to take the translation files from https://github.com/gbv/folio-translations.

Manual

Do to it manually use the browser developer tools to find out the current number folio-testing uses, for example Option 1: Take the file from https://github.com/gbv/folio-testing.dev.folio.org/translations/de-1605513539114translations platform-complete directory, for example de.json. If you your own installation has de-1601343197440.json merge them:
jq -s '.[0] * .[1]' de-1601343197440.json de-1605513539114.json > de-1601343197440.json.new
Then use the joined file: mv de-1601343197440.json.new de-1601343197440.json

Automated

To do it automatically use this script:

#!/bin/sh

# Before running this script change into the ./translations directory where the web server (nginx, ...)
# ships the /translations/*.json files from, for example
# cd /usr/folio/folio-testing-platform/output/translations

set -e

for FILE in ./*-*.json ; do
  if [ ! -e "$FILE" ] ; then
    continue
  fi
  LANG=$(echo "$FILE" | sed -n -E '/^.\/([^-]+)-[0-9]+\.json$/{s//\1/p;q}')
  if [ -z $LANG ] ; then
    continue
  fi
  URL="https://raw.githubusercontent.com/gbv/folio-translations/main/platform-complete/$LANG.json"
  if wget "$URL" -O $LANG.json; then
    echo "$URL"
  else
    echo "failure, skipping $URL"
    continue
  fi
  jq -c -s '.[0] * .[1]' $FILE $LANG.json > $LANG.json.new
  mv $LANG.json.new $FILE
  rm $LANG.json
done

Option 2: Use the browser developer tools to find out the current number folio-snapshot uses, for example https://folio-snapshot.dev.folio.org/translations/de-1605513539114.json. Download it. If your own installation has de-1601343197440.json merge them:
jq -s '.[0] * .[1]' de-1601343197440.json de-1605513539114.json > de-1601343197440.json.new
Then use the joined file: mv de-1601343197440.json.new de-1601343197440.json

Automated

https://github.com/gbv/folio-translationsTo remove new translation keys replace
'.[0] * .[1]'
by
'.[0] as $old | .[0] * .[1] | with_entries( select( .key as $key | $old | has( $key ) ) )'
but this may remove a key that the old code uses and was forgotten to get added to the old language file.

Clean backport using yarn build

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