I used the plugin SiteMigration to transfer my piwik data to a new server. On the new server I just create the database, but with no data. So I just have records in the table option (129), in the table site (1) and in the table user (2). All other tables on the new server have 0 record.
So I execute the plugin on the source server. The migration works, no error. But when I compare the source db and the target db, there is some differences, especially on the tables log_action and log_link_visit_action. Look at this 2 pictures :