Não, não deve quebrar nada. Os registros com marca no WINS não são usados de qualquer maneira. De acordo com o TechNet:
... The owning WINS server changes the status of selected WINS records from active to tombstoned in its database. WINS then treats the records as inactive and released from use. Once these records are tombstoned locally, the owning WINS server neither responds to nor resolves NetBIOS name queries for these names from other WINS clients and WINS servers unless the records are registered again by the WINS client. The owning WINS server replicates the selected records as "tombstoned" to other WINS servers during subsequent replication cycles.