Setting this to 'yes' will make the backend behave like MyDNS on the TTL
values. Setting it to 'no' will make it ignore the minimal-ttl of the
zone. The default is "yes".
+
+Migrating from MyDNS to another SQL backend
+-------------------------------------------
+To use one of the :doc:`generic SQL backend <generic-sql>`, like the :doc:`Postgresql <generic-postgresql>` or :doc:`MySQL <generic-mysql>` backends, the data can be migratedusing the :ref:`Backend to Backend <b2b-migrate>` migration guide.
zone is imported atomically (i.e. it is fully imported, or not) and any
existing records for that zone are overwritten.
+.. _b2b-migrate:
+
Migrating Data from one Backend to Another Backend
--------------------------------------------------