Replication Server 15.6 introduces several usability and process enhancements.
Replicate Database Resynchronization for Adaptive Server
Replication Server allows you to resynchronize and materialize the replicate database, and resume further replication without losing or risking inconsistency of data, and without forcing a quiesce of your primary database.
Delete Exceptions by Range
Use stored procedures to delete transactions in the RSSD exceptions log by range instead of individually.