Have just released two modules to the beta channel - Importer and Exporter. These are complimentary modules that allow for Jamroom sites, and ultimately other CMSs via a plugin framework, to be imported or merged with existing Jamroom sites.
Checkout the documentation for these modules to get a full understanding of what they do and how you can use them.
Paul Asher - JR Developer and System Import Specialist
updated by @paul: 18 Jun 2017 06:49:57PM