AWS SDK for .NET Documentation
RetainPrimaryCluster Property
AmazonAmazon.ElastiCache.ModelDeleteReplicationGroupRequestRetainPrimaryCluster Did this page help you?   Yes   No    Tell us about it...
If set to true, all of the read replicas will be deleted, but the primary cache cluster will be retained.
Declaration Syntax
C#
public bool RetainPrimaryCluster { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)