Plastic SCM provides an import mechanism designed to allow seamless upgrades from your existing version control system. Our import tool lets users migrate an entire project with just a few clicks.
Importers area available for CVS, SourceSafe and Subversion repositories*, and the full version history is imported, including even branch and label (or tag) data where available. Changeset information is also imported in the case of Subversion. You can find documentation on the import process in the Importers Whitepaper or in this screencast, showing the full import process happening on just a few minutes:

Find out all the advantages of upgrading from Visual SourceSafe to Plastic SCM: Plastic SCM for SourceSafe users
(*) Import is also available for IBM Visual Age for Java, upon request. For more information, please contact a sales representative