Does AutoDiscovery mode (Elasticache) as non-sticky save the sessions in multiple nodes?

[toritroniks]

I was going through the documentation and issues, and for what I understood, the session backups works like this:

• if it's configured as sticky, It will save the session locally and in one memcached node.
• if configured as non-sticky, It will save the session in one primary memcached node, and in other node for backup.
  as seen here: Does this client support syncing sessions across all available memcached nodes? #343 (comment)

but in case of Auto Discovery mode, you only set one node (the cluster) on the configuration.
https://github.com/magro/memcached-session-manager/wiki/ConfigureElastiCache

Does that mean that if I use non-sticky session, It will only save in one node?
or will it be smart and somehow save it to 2 nodes, even though there is only one endpoint?

The docs also say that it hasn't been tested with non-sticky sessions, so I don't know how I should architect the system.

Thanks in advance.