How do I transfer AT data from one installation to another?

The basic means for doing this consist of creating a backup of the data, and then using the data to create a new database in the desired location.

For MySQL:

• Create a MySQL dump using:
  

  shell> mysqldump -u [username] -p[password] [database_name] > backup-file.sql

• Load the SQL dump into a new (un-initialized) database:

  shell> mysql -u [username] -p[password] [database_name] < backup-file.sql

Refer to the MySQL Backup and Recovery Documentation for more information.