Migrating

How to migrate veins from File to MySQL

Stop the server if it is running.
Configure MySQL connection in config.yml, but do NOT enable MySQL, just configure connection.
Start server so it loads veins from file.
Type /womigrate
Stop the server after the operation finishes.
Now enable MySQL and it is done.

If something goes wrong in step 4 try to start the server once with enabled MySQL then continue to step 2.