Setting a migration token in Talend Studio
You can import projects and project items exported from an earlier version of Talend Studio. However, if these project items don't contain valid signatures or item keys, you must set a migration token on Talend Studio. Then you can successfully import the projects and project items before the date set in the migration token.
Before setting a migration token, make sure you have received a migration token key provided by Talend upon your request.