There is a new Data Migration resource that details the factors to consider when deciding how to manage your data from one release to the next. Determining if and what to migrate may depend upon any combination of the following: the type of data you create, the quantity of files you manage, and whether you are using a data management system (such as Vault).
The new Data Migration resource includes detailed step-by-step procedures for migrating design and data files. To determine the best migration path for your files, the Data Migration resource breaks down the different types of content and guides you through the migration process for each type.
For more information refer to the topics in the Installation section: http://autodesk.com/wikihelp-pds-install-2013-enu