Update : Amazon Aurora Can Migrate Encrypted Databases from Amazon RDS for MySQL

You can now migrate encrypted databases from Amazon RDS for MySQL to Amazon Aurora. Previously, only unencrypted databases were supported. Migration can be done either by restoring an RDS MySQL snapshot to Aurora, or by creating an Aurora Read Replica, which has the advantage of automating the copying and replication and minimizing downtime. 

from new feature http://ift.tt/2vJRHRF