JBoss.orgCommunity Documentation
There are many changes between eXo Platform 3.0 and eXo Platform 3.5, including data type structure (JCR node type), pre-defined data, templates and gadgets:
Social data: model, and space templates.
Knowledge data: data of Forums, Wiki and Answers.
Collaboration data: data of Calendar.
Content data structure: Document's vote, favorite, illustration, templates, pre-defined scripts and queries.
Platform navigation.
Content Re-import/Migration. At the first time when eXo Platform 3.0 was deployed, the XML contents file in webapps were imported into database. During the eXo Platform 3.0 runtime, the content might be updated/deleted. Now, there are the same content in eXo Platform 3.5 webapps, so you can re-import/override the old one of eXo Platform 3.0 by new one from the eXo Platform 3.5's XML content file.
Many Gadgets.
Users directories structure in JCR data.
All of changes above will be migrated automatically by the migration tools that are detailed as below.