Magnolia 5.4 reached end of life on November 15, 2018. This branch is no longer supported, see End-of-life policy.
Magnolia 5.4.6+.The JCR tools module installs the JCR Tools app that includes subapps to execute JCR queries, create workspace dumps, and export and import JCR content
JCR Tools app replaces three pre-5.4.6 legacy apps - JCR Queries app, Export app and Import app - and combines them into a single app.
See JCR Tools app.