Merge Replicate, reinitialise with a different part of the data
Please follow the steps in Create a Snapshot for a Merge Publication with Parameterized Filters to generate a new snapshot.  You must first generate a standard snapshot, then generate a Subscriber-specific partitioned snapshot.  After generating the snapshots, mark the Subscriber for reinitialization and start the Merge Agent to pull down the schema and data for the filtered subscription.